Finding the Third Proportional to 2,617,515 and 5,536,821

Step by Step Solution

1. Step 1: Write the proportion equation
   2,617,515 : 5,536,821 = 5,536,821 : x
2. Step 2: Convert to fraction form
   2,617,515/5,536,821 = 5,536,821/x
3. Step 3: Cross multiply
   2,617,515x = 5,536,821 × 5,536,821
4. Step 4: Simplify right side
   2,617,515x = 30,656,386,786,041
5. Step 5: Solve for x
   x = 30,656,386,786,041/2,617,515
6. Step 6: Final answer
   x = 11,712,019.52