Finding the Third Proportional to 87,339 and 123,610

Step by Step Solution

1. Step 1: Write the proportion equation
   87,339 : 123,610 = 123,610 : x
2. Step 2: Convert to fraction form
   87,339/123,610 = 123,610/x
3. Step 3: Cross multiply
   87,339x = 123,610 × 123,610
4. Step 4: Simplify right side
   87,339x = 15,279,432,100
5. Step 5: Solve for x
   x = 15,279,432,100/87,339
6. Step 6: Final answer
   x = 174,943.98