Finding the Third Proportional to 1,418,684 and 1,990,698

Step by Step Solution

1. Step 1: Write the proportion equation
   1,418,684 : 1,990,698 = 1,990,698 : x
2. Step 2: Convert to fraction form
   1,418,684/1,990,698 = 1,990,698/x
3. Step 3: Cross multiply
   1,418,684x = 1,990,698 × 1,990,698
4. Step 4: Simplify right side
   1,418,684x = 3,962,878,527,204
5. Step 5: Solve for x
   x = 3,962,878,527,204/1,418,684
6. Step 6: Final answer
   x = 2,793,348.29