Finding the Third Proportional to 3,585,228 and 8,398,822

Step by Step Solution

1. Step 1: Write the proportion equation
   3,585,228 : 8,398,822 = 8,398,822 : x
2. Step 2: Convert to fraction form
   3,585,228/8,398,822 = 8,398,822/x
3. Step 3: Cross multiply
   3,585,228x = 8,398,822 × 8,398,822
4. Step 4: Simplify right side
   3,585,228x = 70,540,210,987,684
5. Step 5: Solve for x
   x = 70,540,210,987,684/3,585,228
6. Step 6: Final answer
   x = 19,675,237.11