Finding the Third Proportional to 1,400,988 and 2,218,770

Step by Step Solution

1. Step 1: Write the proportion equation
   1,400,988 : 2,218,770 = 2,218,770 : x
2. Step 2: Convert to fraction form
   1,400,988/2,218,770 = 2,218,770/x
3. Step 3: Cross multiply
   1,400,988x = 2,218,770 × 2,218,770
4. Step 4: Simplify right side
   1,400,988x = 4,922,940,312,900
5. Step 5: Solve for x
   x = 4,922,940,312,900/1,400,988
6. Step 6: Final answer
   x = 3,513,906.12