Finding the Third Proportional to 87,660 and 142,418

Step by Step Solution

1. Step 1: Write the proportion equation
   87,660 : 142,418 = 142,418 : x
2. Step 2: Convert to fraction form
   87,660/142,418 = 142,418/x
3. Step 3: Cross multiply
   87,660x = 142,418 × 142,418
4. Step 4: Simplify right side
   87,660x = 20,282,886,724
5. Step 5: Solve for x
   x = 20,282,886,724/87,660
6. Step 6: Final answer
   x = 231,381.32