Finding the Third Proportional to 18,042.75 and 39,958.31

Step by Step Solution

1. Step 1: Write the proportion equation
   18,042.75 : 39,958.31 = 39,958.31 : x
2. Step 2: Convert to fraction form
   18,042.75/39,958.31 = 39,958.31/x
3. Step 3: Cross multiply
   18,042.75x = 39,958.31 × 39,958.31
4. Step 4: Simplify right side
   18,042.75x = 1,596,666,737.85
5. Step 5: Solve for x
   x = 1,596,666,737.85/18,042.75
6. Step 6: Final answer
   x = 88,493.54