Finding the Third Proportional to 16,390.69 and 25,270.31

Step by Step Solution

1. Step 1: Write the proportion equation
   16,390.69 : 25,270.31 = 25,270.31 : x
2. Step 2: Convert to fraction form
   16,390.69/25,270.31 = 25,270.31/x
3. Step 3: Cross multiply
   16,390.69x = 25,270.31 × 25,270.31
4. Step 4: Simplify right side
   16,390.69x = 638,588,693.85
5. Step 5: Solve for x
   x = 638,588,693.85/16,390.69
6. Step 6: Final answer
   x = 38,960.46