Finding the Third Proportional to 52,708.50 and 82,518.75

Step by Step Solution

1. Step 1: Write the proportion equation
   52,708.50 : 82,518.75 = 82,518.75 : x
2. Step 2: Convert to fraction form
   52,708.50/82,518.75 = 82,518.75/x
3. Step 3: Cross multiply
   52,708.50x = 82,518.75 × 82,518.75
4. Step 4: Simplify right side
   52,708.50x = 6,809,344,101.56
5. Step 5: Solve for x
   x = 6,809,344,101.56/52,708.50
6. Step 6: Final answer
   x = 129,188.73