Finding the Third Proportional to 3,998,582 and 8,707,084

Step by Step Solution

1. Step 1: Write the proportion equation
   3,998,582 : 8,707,084 = 8,707,084 : x
2. Step 2: Convert to fraction form
   3,998,582/8,707,084 = 8,707,084/x
3. Step 3: Cross multiply
   3,998,582x = 8,707,084 × 8,707,084
4. Step 4: Simplify right side
   3,998,582x = 75,813,311,783,056
5. Step 5: Solve for x
   x = 75,813,311,783,056/3,998,582
6. Step 6: Final answer
   x = 18,960,049.28