Finding the Third Proportional to 3,216,813 and 4,900,689

Step by Step Solution

1. Step 1: Write the proportion equation
   3,216,813 : 4,900,689 = 4,900,689 : x
2. Step 2: Convert to fraction form
   3,216,813/4,900,689 = 4,900,689/x
3. Step 3: Cross multiply
   3,216,813x = 4,900,689 × 4,900,689
4. Step 4: Simplify right side
   3,216,813x = 24,016,752,674,721
5. Step 5: Solve for x
   x = 24,016,752,674,721/3,216,813
6. Step 6: Final answer
   x = 7,466,008.34