Finding the Third Proportional to 3,290,676 and 7,211,624

Step by Step Solution

1. Step 1: Write the proportion equation
   3,290,676 : 7,211,624 = 7,211,624 : x
2. Step 2: Convert to fraction form
   3,290,676/7,211,624 = 7,211,624/x
3. Step 3: Cross multiply
   3,290,676x = 7,211,624 × 7,211,624
4. Step 4: Simplify right side
   3,290,676x = 52,007,520,717,376
5. Step 5: Solve for x
   x = 52,007,520,717,376/3,290,676
6. Step 6: Final answer
   x = 15,804,509.69