Finding the Third Proportional to 54,380.25 and 84,036.38

Step by Step Solution

1. Step 1: Write the proportion equation
   54,380.25 : 84,036.38 = 84,036.38 : x
2. Step 2: Convert to fraction form
   54,380.25/84,036.38 = 84,036.38/x
3. Step 3: Cross multiply
   54,380.25x = 84,036.38 × 84,036.38
4. Step 4: Simplify right side
   54,380.25x = 7,062,112,323.14
5. Step 5: Solve for x
   x = 7,062,112,323.14/54,380.25
6. Step 6: Final answer
   x = 129,865.39