Finding the Third Proportional to 5,578,564 and 7,855,710

Step by Step Solution

1. Step 1: Write the proportion equation
   5,578,564 : 7,855,710 = 7,855,710 : x
2. Step 2: Convert to fraction form
   5,578,564/7,855,710 = 7,855,710/x
3. Step 3: Cross multiply
   5,578,564x = 7,855,710 × 7,855,710
4. Step 4: Simplify right side
   5,578,564x = 61,712,179,604,100
5. Step 5: Solve for x
   x = 61,712,179,604,100/5,578,564
6. Step 6: Final answer
   x = 11,062,377.27