Finding the Third Proportional to 31,118.50 and 47,831.50

Step by Step Solution

1. Step 1: Write the proportion equation
   31,118.50 : 47,831.50 = 47,831.50 : x
2. Step 2: Convert to fraction form
   31,118.50/47,831.50 = 47,831.50/x
3. Step 3: Cross multiply
   31,118.50x = 47,831.50 × 47,831.50
4. Step 4: Simplify right side
   31,118.50x = 2,287,852,392.25
5. Step 5: Solve for x
   x = 2,287,852,392.25/31,118.50
6. Step 6: Final answer
   x = 73,520.65