Finding the Third Proportional to 16,139.25 and 25,221.38

Step by Step Solution

1. Step 1: Write the proportion equation
   16,139.25 : 25,221.38 = 25,221.38 : x
2. Step 2: Convert to fraction form
   16,139.25/25,221.38 = 25,221.38/x
3. Step 3: Cross multiply
   16,139.25x = 25,221.38 × 25,221.38
4. Step 4: Simplify right side
   16,139.25x = 636,117,756.89
5. Step 5: Solve for x
   x = 636,117,756.89/16,139.25
6. Step 6: Final answer
   x = 39,414.33