Finding the Third Proportional to 54,059.91 and 83,140.17

Step by Step Solution

1. Step 1: Write the proportion equation
   54,059.91 : 83,140.17 = 83,140.17 : x
2. Step 2: Convert to fraction form
   54,059.91/83,140.17 = 83,140.17/x
3. Step 3: Cross multiply
   54,059.91x = 83,140.17 × 83,140.17
4. Step 4: Simplify right side
   54,059.91x = 6,912,288,179.40
5. Step 5: Solve for x
   x = 6,912,288,179.40/54,059.91
6. Step 6: Final answer
   x = 127,863.49