Finding the Third Proportional to 54,682.88 and 85,669.31

Step by Step Solution

1. Step 1: Write the proportion equation
   54,682.88 : 85,669.31 = 85,669.31 : x
2. Step 2: Convert to fraction form
   54,682.88/85,669.31 = 85,669.31/x
3. Step 3: Cross multiply
   54,682.88x = 85,669.31 × 85,669.31
4. Step 4: Simplify right side
   54,682.88x = 7,339,231,104.22
5. Step 5: Solve for x
   x = 7,339,231,104.22/54,682.88
6. Step 6: Final answer
   x = 134,214.43