Finding the Third Proportional to 16,688.25 and 25,831.25

Step by Step Solution

1. Step 1: Write the proportion equation
   16,688.25 : 25,831.25 = 25,831.25 : x
2. Step 2: Convert to fraction form
   16,688.25/25,831.25 = 25,831.25/x
3. Step 3: Cross multiply
   16,688.25x = 25,831.25 × 25,831.25
4. Step 4: Simplify right side
   16,688.25x = 667,253,476.56
5. Step 5: Solve for x
   x = 667,253,476.56/16,688.25
6. Step 6: Final answer
   x = 39,983.43