Finding the Third Proportional to 1,344,155 and 2,129,439

Step by Step Solution

1. Step 1: Write the proportion equation
   1,344,155 : 2,129,439 = 2,129,439 : x
2. Step 2: Convert to fraction form
   1,344,155/2,129,439 = 2,129,439/x
3. Step 3: Cross multiply
   1,344,155x = 2,129,439 × 2,129,439
4. Step 4: Simplify right side
   1,344,155x = 4,534,510,454,721
5. Step 5: Solve for x
   x = 4,534,510,454,721/1,344,155
6. Step 6: Final answer
   x = 3,373,502.65