Finding the Third Proportional to 1,399,930 and 2,171,822

Step by Step Solution

1. Step 1: Write the proportion equation
   1,399,930 : 2,171,822 = 2,171,822 : x
2. Step 2: Convert to fraction form
   1,399,930/2,171,822 = 2,171,822/x
3. Step 3: Cross multiply
   1,399,930x = 2,171,822 × 2,171,822
4. Step 4: Simplify right side
   1,399,930x = 4,716,810,799,684
5. Step 5: Solve for x
   x = 4,716,810,799,684/1,399,930
6. Step 6: Final answer
   x = 3,369,319.04