Finding the Third Proportional to 3,690,648 and 7,987,818

Step by Step Solution

1. Step 1: Write the proportion equation
   3,690,648 : 7,987,818 = 7,987,818 : x
2. Step 2: Convert to fraction form
   3,690,648/7,987,818 = 7,987,818/x
3. Step 3: Cross multiply
   3,690,648x = 7,987,818 × 7,987,818
4. Step 4: Simplify right side
   3,690,648x = 63,805,236,401,124
5. Step 5: Solve for x
   x = 63,805,236,401,124/3,690,648
6. Step 6: Final answer
   x = 17,288,355.97