Finding the Third Proportional to 1,668,816 and 3,589,218

Step by Step Solution

1. Step 1: Write the proportion equation
   1,668,816 : 3,589,218 = 3,589,218 : x
2. Step 2: Convert to fraction form
   1,668,816/3,589,218 = 3,589,218/x
3. Step 3: Cross multiply
   1,668,816x = 3,589,218 × 3,589,218
4. Step 4: Simplify right side
   1,668,816x = 12,882,485,851,524
5. Step 5: Solve for x
   x = 12,882,485,851,524/1,668,816
6. Step 6: Final answer
   x = 7,719,536.40