Finding the Third Proportional to 3,990,150 and 8,298,756

Step by Step Solution

1. Step 1: Write the proportion equation
   3,990,150 : 8,298,756 = 8,298,756 : x
2. Step 2: Convert to fraction form
   3,990,150/8,298,756 = 8,298,756/x
3. Step 3: Cross multiply
   3,990,150x = 8,298,756 × 8,298,756
4. Step 4: Simplify right side
   3,990,150x = 68,869,351,147,536
5. Step 5: Solve for x
   x = 68,869,351,147,536/3,990,150
6. Step 6: Final answer
   x = 17,259,840.14