Finding the Third Proportional to 54,018.75 and 81,773.38

Step by Step Solution

1. Step 1: Write the proportion equation
   54,018.75 : 81,773.38 = 81,773.38 : x
2. Step 2: Convert to fraction form
   54,018.75/81,773.38 = 81,773.38/x
3. Step 3: Cross multiply
   54,018.75x = 81,773.38 × 81,773.38
4. Step 4: Simplify right side
   54,018.75x = 6,686,884,858.89
5. Step 5: Solve for x
   x = 6,686,884,858.89/54,018.75
6. Step 6: Final answer
   x = 123,788.22