Finding the Third Proportional to 5,423,779 and 8,205,648

Step by Step Solution

1. Step 1: Write the proportion equation
   5,423,779 : 8,205,648 = 8,205,648 : x
2. Step 2: Convert to fraction form
   5,423,779/8,205,648 = 8,205,648/x
3. Step 3: Cross multiply
   5,423,779x = 8,205,648 × 8,205,648
4. Step 4: Simplify right side
   5,423,779x = 67,332,659,099,904
5. Step 5: Solve for x
   x = 67,332,659,099,904/5,423,779
6. Step 6: Final answer
   x = 12,414,344.15