Finding the Third Proportional to 1,400,998 and 2,218,785

Step by Step Solution

1. Step 1: Write the proportion equation
   1,400,998 : 2,218,785 = 2,218,785 : x
2. Step 2: Convert to fraction form
   1,400,998/2,218,785 = 2,218,785/x
3. Step 3: Cross multiply
   1,400,998x = 2,218,785 × 2,218,785
4. Step 4: Simplify right side
   1,400,998x = 4,923,006,876,225
5. Step 5: Solve for x
   x = 4,923,006,876,225/1,400,998
6. Step 6: Final answer
   x = 3,513,928.55