Finding the Third Proportional to 3,290,674 and 7,211,620

Step by Step Solution

1. Step 1: Write the proportion equation
   3,290,674 : 7,211,620 = 7,211,620 : x
2. Step 2: Convert to fraction form
   3,290,674/7,211,620 = 7,211,620/x
3. Step 3: Cross multiply
   3,290,674x = 7,211,620 × 7,211,620
4. Step 4: Simplify right side
   3,290,674x = 52,007,463,024,400
5. Step 5: Solve for x
   x = 52,007,463,024,400/3,290,674
6. Step 6: Final answer
   x = 15,804,501.76