Finding the Third Proportional to 54,398.25 and 84,067.88

Step by Step Solution

1. Step 1: Write the proportion equation
   54,398.25 : 84,067.88 = 84,067.88 : x
2. Step 2: Convert to fraction form
   54,398.25/84,067.88 = 84,067.88/x
3. Step 3: Cross multiply
   54,398.25x = 84,067.88 × 84,067.88
4. Step 4: Simplify right side
   54,398.25x = 7,067,407,607.02
5. Step 5: Solve for x
   x = 7,067,407,607.02/54,398.25
6. Step 6: Final answer
   x = 129,919.76