Finding the Third Proportional to 424,831.50 and 828,144

Step by Step Solution

1. Step 1: Write the proportion equation
   424,831.50 : 828,144 = 828,144 : x
2. Step 2: Convert to fraction form
   424,831.50/828,144 = 828,144/x
3. Step 3: Cross multiply
   424,831.50x = 828,144 × 828,144
4. Step 4: Simplify right side
   424,831.50x = 685,822,484,736
5. Step 5: Solve for x
   x = 685,822,484,736/424,831.50
6. Step 6: Final answer
   x = 1,614,340.00