Finding the Third Proportional to 54,268.50 and 83,863.50

Step by Step Solution

1. Step 1: Write the proportion equation
   54,268.50 : 83,863.50 = 83,863.50 : x
2. Step 2: Convert to fraction form
   54,268.50/83,863.50 = 83,863.50/x
3. Step 3: Cross multiply
   54,268.50x = 83,863.50 × 83,863.50
4. Step 4: Simplify right side
   54,268.50x = 7,033,086,632.25
5. Step 5: Solve for x
   x = 7,033,086,632.25/54,268.50
6. Step 6: Final answer
   x = 129,597.96