Finding the Third Proportional to 54,086.25 and 80,679.38

Step by Step Solution

1. Step 1: Write the proportion equation
   54,086.25 : 80,679.38 = 80,679.38 : x
2. Step 2: Convert to fraction form
   54,086.25/80,679.38 = 80,679.38/x
3. Step 3: Cross multiply
   54,086.25x = 80,679.38 × 80,679.38
4. Step 4: Simplify right side
   54,086.25x = 6,509,161,550.39
5. Step 5: Solve for x
   x = 6,509,161,550.39/54,086.25
6. Step 6: Final answer
   x = 120,347.81