Finding the Third Proportional to 60,128 and 89,676

Step by Step Solution

1. Step 1: Write the proportion equation
   60,128 : 89,676 = 89,676 : x
2. Step 2: Convert to fraction form
   60,128/89,676 = 89,676/x
3. Step 3: Cross multiply
   60,128x = 89,676 × 89,676
4. Step 4: Simplify right side
   60,128x = 8,041,784,976
5. Step 5: Solve for x
   x = 8,041,784,976/60,128
6. Step 6: Final answer
   x = 133,744.43