Finding the Third Proportional to 2,644,980 and 3,957,210

Step by Step Solution

1. Step 1: Write the proportion equation
   2,644,980 : 3,957,210 = 3,957,210 : x
2. Step 2: Convert to fraction form
   2,644,980/3,957,210 = 3,957,210/x
3. Step 3: Cross multiply
   2,644,980x = 3,957,210 × 3,957,210
4. Step 4: Simplify right side
   2,644,980x = 15,659,510,984,100
5. Step 5: Solve for x
   x = 15,659,510,984,100/2,644,980
6. Step 6: Final answer
   x = 5,920,464.80