Finding the Third Proportional to 2,561,817 and 5,519,508

Step by Step Solution

1. Step 1: Write the proportion equation
   2,561,817 : 5,519,508 = 5,519,508 : x
2. Step 2: Convert to fraction form
   2,561,817/5,519,508 = 5,519,508/x
3. Step 3: Cross multiply
   2,561,817x = 5,519,508 × 5,519,508
4. Step 4: Simplify right side
   2,561,817x = 30,464,968,562,064
5. Step 5: Solve for x
   x = 30,464,968,562,064/2,561,817
6. Step 6: Final answer
   x = 11,891,937.86