Finding the Third Proportional to 1,386,830 and 2,983,612

Step by Step Solution

1. Step 1: Write the proportion equation
   1,386,830 : 2,983,612 = 2,983,612 : x
2. Step 2: Convert to fraction form
   1,386,830/2,983,612 = 2,983,612/x
3. Step 3: Cross multiply
   1,386,830x = 2,983,612 × 2,983,612
4. Step 4: Simplify right side
   1,386,830x = 8,901,940,566,544
5. Step 5: Solve for x
   x = 8,901,940,566,544/1,386,830
6. Step 6: Final answer
   x = 6,418,912.60