Finding the Third Proportional to 8,145 and 10,831.50

Step by Step Solution

1. Step 1: Write the proportion equation
   8,145 : 10,831.50 = 10,831.50 : x
2. Step 2: Convert to fraction form
   8,145/10,831.50 = 10,831.50/x
3. Step 3: Cross multiply
   8,145x = 10,831.50 × 10,831.50
4. Step 4: Simplify right side
   8,145x = 117,321,392.25
5. Step 5: Solve for x
   x = 117,321,392.25/8,145
6. Step 6: Final answer
   x = 14,404.10