Finding the Third Proportional to 60,610.50 and 129,645

Step by Step Solution

1. Step 1: Write the proportion equation
   60,610.50 : 129,645 = 129,645 : x
2. Step 2: Convert to fraction form
   60,610.50/129,645 = 129,645/x
3. Step 3: Cross multiply
   60,610.50x = 129,645 × 129,645
4. Step 4: Simplify right side
   60,610.50x = 16,807,826,025
5. Step 5: Solve for x
   x = 16,807,826,025/60,610.50
6. Step 6: Final answer
   x = 277,308.82