Finding the Third Proportional to 3,853,890 and 8,394,132

Step by Step Solution

1. Step 1: Write the proportion equation
   3,853,890 : 8,394,132 = 8,394,132 : x
2. Step 2: Convert to fraction form
   3,853,890/8,394,132 = 8,394,132/x
3. Step 3: Cross multiply
   3,853,890x = 8,394,132 × 8,394,132
4. Step 4: Simplify right side
   3,853,890x = 70,461,452,033,424
5. Step 5: Solve for x
   x = 70,461,452,033,424/3,853,890
6. Step 6: Final answer
   x = 18,283,202.69