Finding the Third Proportional to 87,660 and 142,422

Step by Step Solution

1. Step 1: Write the proportion equation
   87,660 : 142,422 = 142,422 : x
2. Step 2: Convert to fraction form
   87,660/142,422 = 142,422/x
3. Step 3: Cross multiply
   87,660x = 142,422 × 142,422
4. Step 4: Simplify right side
   87,660x = 20,284,026,084
5. Step 5: Solve for x
   x = 20,284,026,084/87,660
6. Step 6: Final answer
   x = 231,394.32