Finding the Third Proportional to 60,399 and 88,518

Step by Step Solution

1. Step 1: Write the proportion equation
   60,399 : 88,518 = 88,518 : x
2. Step 2: Convert to fraction form
   60,399/88,518 = 88,518/x
3. Step 3: Cross multiply
   60,399x = 88,518 × 88,518
4. Step 4: Simplify right side
   60,399x = 7,835,436,324
5. Step 5: Solve for x
   x = 7,835,436,324/60,399
6. Step 6: Final answer
   x = 129,727.91