Finding the Third Proportional to 54,291.38 and 81,864.14

Step by Step Solution

1. Step 1: Write the proportion equation
   54,291.38 : 81,864.14 = 81,864.14 : x
2. Step 2: Convert to fraction form
   54,291.38/81,864.14 = 81,864.14/x
3. Step 3: Cross multiply
   54,291.38x = 81,864.14 × 81,864.14
4. Step 4: Simplify right side
   54,291.38x = 6,701,737,520.27
5. Step 5: Solve for x
   x = 6,701,737,520.27/54,291.38
6. Step 6: Final answer
   x = 123,440.19