89 feet 10 inches
The distance is 60 ft
On a 60' square diamond it is 89' 10".
You can find the distance between first and third on any baseball or softball field by using the following formula: A squared plus B squared equals C squared. A is the distance between home and first base B is the distance between home and third base C is the distance between first base and third base. So, in MLB, where the distances between bases is 90 ft., it would be 127 feet 3 inches.
Pythagorean Theorem. We know its 90 feet between the bases, and we know that you're describing a right triangle, so we can figure the distance between home plate and second base as: 90^2 + 90^2 = x^2 8100 + 8100 = x^2 16200 = x^2 127.29 feet