Finding the Third Proportional to 54,359.25 and 86,480.25

Step by Step Solution

1. Step 1: Write the proportion equation
   54,359.25 : 86,480.25 = 86,480.25 : x
2. Step 2: Convert to fraction form
   54,359.25/86,480.25 = 86,480.25/x
3. Step 3: Cross multiply
   54,359.25x = 86,480.25 × 86,480.25
4. Step 4: Simplify right side
   54,359.25x = 7,478,833,640.06
5. Step 5: Solve for x
   x = 7,478,833,640.06/54,359.25
6. Step 6: Final answer
   x = 137,581.62