Finding the Third Proportional to 5,578,562 and 7,855,707

Step by Step Solution

1. Step 1: Write the proportion equation
   5,578,562 : 7,855,707 = 7,855,707 : x
2. Step 2: Convert to fraction form
   5,578,562/7,855,707 = 7,855,707/x
3. Step 3: Cross multiply
   5,578,562x = 7,855,707 × 7,855,707
4. Step 4: Simplify right side
   5,578,562x = 61,712,132,469,849
5. Step 5: Solve for x
   x = 61,712,132,469,849/5,578,562
6. Step 6: Final answer
   x = 11,062,372.79