Finding the Third Proportional to 3,928,222 and 8,456,796

Step by Step Solution

1. Step 1: Write the proportion equation
   3,928,222 : 8,456,796 = 8,456,796 : x
2. Step 2: Convert to fraction form
   3,928,222/8,456,796 = 8,456,796/x
3. Step 3: Cross multiply
   3,928,222x = 8,456,796 × 8,456,796
4. Step 4: Simplify right side
   3,928,222x = 71,517,398,585,616
5. Step 5: Solve for x
   x = 71,517,398,585,616/3,928,222
6. Step 6: Final answer
   x = 18,206,048.08