Finding the Third Proportional to 52,539.75 and 81,487.69

Step by Step Solution

1. Step 1: Write the proportion equation
   52,539.75 : 81,487.69 = 81,487.69 : x
2. Step 2: Convert to fraction form
   52,539.75/81,487.69 = 81,487.69/x
3. Step 3: Cross multiply
   52,539.75x = 81,487.69 × 81,487.69
4. Step 4: Simplify right side
   52,539.75x = 6,640,243,214.10
5. Step 5: Solve for x
   x = 6,640,243,214.10/52,539.75
6. Step 6: Final answer
   x = 126,385.13