Finding the Third Proportional to 3,906,784 and 8,112,992

Step by Step Solution

1. Step 1: Write the proportion equation
   3,906,784 : 8,112,992 = 8,112,992 : x
2. Step 2: Convert to fraction form
   3,906,784/8,112,992 = 8,112,992/x
3. Step 3: Cross multiply
   3,906,784x = 8,112,992 × 8,112,992
4. Step 4: Simplify right side
   3,906,784x = 65,820,639,192,064
5. Step 5: Solve for x
   x = 65,820,639,192,064/3,906,784
6. Step 6: Final answer
   x = 16,847,780.47