Finding the Third Proportional to 54,443 and 81,665

Step by Step Solution

1. Step 1: Write the proportion equation
   54,443 : 81,665 = 81,665 : x
2. Step 2: Convert to fraction form
   54,443/81,665 = 81,665/x
3. Step 3: Cross multiply
   54,443x = 81,665 × 81,665
4. Step 4: Simplify right side
   54,443x = 6,669,172,225
5. Step 5: Solve for x
   x = 6,669,172,225/54,443
6. Step 6: Final answer
   x = 122,498.25