Finding the Third Proportional to 2,157,779 and 4,581,540

Step by Step Solution

1. Step 1: Write the proportion equation
   2,157,779 : 4,581,540 = 4,581,540 : x
2. Step 2: Convert to fraction form
   2,157,779/4,581,540 = 4,581,540/x
3. Step 3: Cross multiply
   2,157,779x = 4,581,540 × 4,581,540
4. Step 4: Simplify right side
   2,157,779x = 20,990,508,771,600
5. Step 5: Solve for x
   x = 20,990,508,771,600/2,157,779
6. Step 6: Final answer
   x = 9,727,830.69