Finding the Third Proportional to 3,920,571 and 8,441,856

Step by Step Solution

1. Step 1: Write the proportion equation
   3,920,571 : 8,441,856 = 8,441,856 : x
2. Step 2: Convert to fraction form
   3,920,571/8,441,856 = 8,441,856/x
3. Step 3: Cross multiply
   3,920,571x = 8,441,856 × 8,441,856
4. Step 4: Simplify right side
   3,920,571x = 71,264,932,724,736
5. Step 5: Solve for x
   x = 71,264,932,724,736/3,920,571
6. Step 6: Final answer
   x = 18,177,182.03