Finding the Third Proportional to 1,236,518 and 2,690,779

Step by Step Solution

1. Step 1: Write the proportion equation
   1,236,518 : 2,690,779 = 2,690,779 : x
2. Step 2: Convert to fraction form
   1,236,518/2,690,779 = 2,690,779/x
3. Step 3: Cross multiply
   1,236,518x = 2,690,779 × 2,690,779
4. Step 4: Simplify right side
   1,236,518x = 7,240,291,626,841
5. Step 5: Solve for x
   x = 7,240,291,626,841/1,236,518
6. Step 6: Final answer
   x = 5,855,387.17