Finding the Third Proportional to 60,387 and 128,082

Step by Step Solution

1. Step 1: Write the proportion equation
   60,387 : 128,082 = 128,082 : x
2. Step 2: Convert to fraction form
   60,387/128,082 = 128,082/x
3. Step 3: Cross multiply
   60,387x = 128,082 × 128,082
4. Step 4: Simplify right side
   60,387x = 16,404,998,724
5. Step 5: Solve for x
   x = 16,404,998,724/60,387
6. Step 6: Final answer
   x = 271,664.41