Finding the Third Proportional to 3,290,664 and 7,211,600

Step by Step Solution

1. Step 1: Write the proportion equation
   3,290,664 : 7,211,600 = 7,211,600 : x
2. Step 2: Convert to fraction form
   3,290,664/7,211,600 = 7,211,600/x
3. Step 3: Cross multiply
   3,290,664x = 7,211,600 × 7,211,600
4. Step 4: Simplify right side
   3,290,664x = 52,007,174,560,000
5. Step 5: Solve for x
   x = 52,007,174,560,000/3,290,664
6. Step 6: Final answer
   x = 15,804,462.13