The number in the middle between 50 and 75 is 62.5. To find the midpoint between any two numbers, you add them together and divide by 2. In this case: (50 + 75) ÷ 2 = 125 ÷ 2 = 62.5. This point is equidistant from both 50 and 75, lying exactly halfway along the number line between them.