Finding the Third Proportional to 9,928 and 21,831.50

Step by Step Solution

1. Step 1: Write the proportion equation
   9,928 : 21,831.50 = 21,831.50 : x
2. Step 2: Convert to fraction form
   9,928/21,831.50 = 21,831.50/x
3. Step 3: Cross multiply
   9,928x = 21,831.50 × 21,831.50
4. Step 4: Simplify right side
   9,928x = 476,614,392.25
5. Step 5: Solve for x
   x = 476,614,392.25/9,928
6. Step 6: Final answer
   x = 48,007.09