The corresponding number for the positive three is simply 3. In the decimal numeral system, which is the most widely used numeral system in the world, the number three is represented by the digit '3'. This is consistent across various mathematical and numerical systems.

The significance of the number three can be attributed to its unique properties and its role in various mathematical concepts. For instance, three is the smallest odd prime number, which means it is a natural number greater than one that has no positive divisors other than one and itself. This property makes it a fundamental building block in number theory.

Additionally, the number three is significant in geometry, as it is the smallest number that can form a triangle. This is a fundamental concept in the study of shapes and structures. The triangle is the simplest polygon and has been used in architecture, engineering, and art for centuries.

Furthermore, the number three is often associated with balance and stability. This is evident in the concept of the "trinity" in many religions, where it represents the unity of three distinct entities (e.g., the Father, Son, and Holy Spirit in Christianity). This symbolism of balance and completeness is deeply ingrained in many cultures and societies.

Data from various studies and historical records support the significance of the number three. For example, in mathematics, the number three is often used in formulas and equations due to its unique properties. In geometry, the triangle is the most basic and stable shape, and its use in construction and design is well-documented. In religion and culture, the number three is frequently used to represent unity and completeness.

In conclusion, the corresponding number for the positive three is 3, and its significance is rooted in its mathematical properties, geometric applications, and cultural symbolism.