Finding the Third Proportional to 428,078 and 922,384

Step by Step Solution

1. Step 1: Write the proportion equation
   428,078 : 922,384 = 922,384 : x
2. Step 2: Convert to fraction form
   428,078/922,384 = 922,384/x
3. Step 3: Cross multiply
   428,078x = 922,384 × 922,384
4. Step 4: Simplify right side
   428,078x = 850,792,243,456
5. Step 5: Solve for x
   x = 850,792,243,456/428,078
6. Step 6: Final answer
   x = 1,987,470.14