Finding the Third Proportional to 60,438 and 88,470

Step by Step Solution

1. Step 1: Write the proportion equation
   60,438 : 88,470 = 88,470 : x
2. Step 2: Convert to fraction form
   60,438/88,470 = 88,470/x
3. Step 3: Cross multiply
   60,438x = 88,470 × 88,470
4. Step 4: Simplify right side
   60,438x = 7,826,940,900
5. Step 5: Solve for x
   x = 7,826,940,900/60,438
6. Step 6: Final answer
   x = 129,503.64