Finding the Third Proportional to 388,831.50 and 571,824

Step by Step Solution

1. Step 1: Write the proportion equation
   388,831.50 : 571,824 = 571,824 : x
2. Step 2: Convert to fraction form
   388,831.50/571,824 = 571,824/x
3. Step 3: Cross multiply
   388,831.50x = 571,824 × 571,824
4. Step 4: Simplify right side
   388,831.50x = 326,982,686,976
5. Step 5: Solve for x
   x = 326,982,686,976/388,831.50
6. Step 6: Final answer
   x = 840,936.72