Finding the Third Proportional to 1,816,678 and 3,942,452

Step by Step Solution

1. Step 1: Write the proportion equation
   1,816,678 : 3,942,452 = 3,942,452 : x
2. Step 2: Convert to fraction form
   1,816,678/3,942,452 = 3,942,452/x
3. Step 3: Cross multiply
   1,816,678x = 3,942,452 × 3,942,452
4. Step 4: Simplify right side
   1,816,678x = 15,542,927,772,304
5. Step 5: Solve for x
   x = 15,542,927,772,304/1,816,678
6. Step 6: Final answer
   x = 8,555,686.68