Finding the Third Proportional to 1,338,707 and 2,039,439

Step by Step Solution

1. Step 1: Write the proportion equation
   1,338,707 : 2,039,439 = 2,039,439 : x
2. Step 2: Convert to fraction form
   1,338,707/2,039,439 = 2,039,439/x
3. Step 3: Cross multiply
   1,338,707x = 2,039,439 × 2,039,439
4. Step 4: Simplify right side
   1,338,707x = 4,159,311,434,721
5. Step 5: Solve for x
   x = 4,159,311,434,721/1,338,707
6. Step 6: Final answer
   x = 3,106,961.74