Finding the Third Proportional to 54,448.88 and 81,673.31

Step by Step Solution

1. Step 1: Write the proportion equation
   54,448.88 : 81,673.31 = 81,673.31 : x
2. Step 2: Convert to fraction form
   54,448.88/81,673.31 = 81,673.31/x
3. Step 3: Cross multiply
   54,448.88x = 81,673.31 × 81,673.31
4. Step 4: Simplify right side
   54,448.88x = 6,670,529,974.72
5. Step 5: Solve for x
   x = 6,670,529,974.72/54,448.88
6. Step 6: Final answer
   x = 122,509.97