Finding the Third Proportional to 87,469.31 and 123,872.63

Step by Step Solution

1. Step 1: Write the proportion equation
   87,469.31 : 123,872.63 = 123,872.63 : x
2. Step 2: Convert to fraction form
   87,469.31/123,872.63 = 123,872.63/x
3. Step 3: Cross multiply
   87,469.31x = 123,872.63 × 123,872.63
4. Step 4: Simplify right side
   87,469.31x = 15,344,427,224.39
5. Step 5: Solve for x
   x = 15,344,427,224.39/87,469.31
6. Step 6: Final answer
   x = 175,426.41