Finding the Third Proportional to 3,561,818 and 8,399,756

Step by Step Solution

1. Step 1: Write the proportion equation
   3,561,818 : 8,399,756 = 8,399,756 : x
2. Step 2: Convert to fraction form
   3,561,818/8,399,756 = 8,399,756/x
3. Step 3: Cross multiply
   3,561,818x = 8,399,756 × 8,399,756
4. Step 4: Simplify right side
   3,561,818x = 70,555,900,859,536
5. Step 5: Solve for x
   x = 70,555,900,859,536/3,561,818
6. Step 6: Final answer
   x = 19,808,957.35