Finding the Third Proportional to 3,859,870 and 5,677,519

Step by Step Solution

1. Step 1: Write the proportion equation
   3,859,870 : 5,677,519 = 5,677,519 : x
2. Step 2: Convert to fraction form
   3,859,870/5,677,519 = 5,677,519/x
3. Step 3: Cross multiply
   3,859,870x = 5,677,519 × 5,677,519
4. Step 4: Simplify right side
   3,859,870x = 32,234,221,995,361
5. Step 5: Solve for x
   x = 32,234,221,995,361/3,859,870
6. Step 6: Final answer
   x = 8,351,115.97