Finding the Third Proportional to 5,679,870 and 8,578,941

Step by Step Solution

1. Step 1: Write the proportion equation
   5,679,870 : 8,578,941 = 8,578,941 : x
2. Step 2: Convert to fraction form
   5,679,870/8,578,941 = 8,578,941/x
3. Step 3: Cross multiply
   5,679,870x = 8,578,941 × 8,578,941
4. Step 4: Simplify right side
   5,679,870x = 73,598,228,681,481
5. Step 5: Solve for x
   x = 73,598,228,681,481/5,679,870
6. Step 6: Final answer
   x = 12,957,731.19