Finding the Third Proportional to 3,920,287 and 8,408,074

Step by Step Solution

1. Step 1: Write the proportion equation
   3,920,287 : 8,408,074 = 8,408,074 : x
2. Step 2: Convert to fraction form
   3,920,287/8,408,074 = 8,408,074/x
3. Step 3: Cross multiply
   3,920,287x = 8,408,074 × 8,408,074
4. Step 4: Simplify right side
   3,920,287x = 70,695,708,389,476
5. Step 5: Solve for x
   x = 70,695,708,389,476/3,920,287
6. Step 6: Final answer
   x = 18,033,299.19