Finding the Third Proportional to 2,187,390 and 3,424,449

Step by Step Solution

1. Step 1: Write the proportion equation
   2,187,390 : 3,424,449 = 3,424,449 : x
2. Step 2: Convert to fraction form
   2,187,390/3,424,449 = 3,424,449/x
3. Step 3: Cross multiply
   2,187,390x = 3,424,449 × 3,424,449
4. Step 4: Simplify right side
   2,187,390x = 11,726,850,953,601
5. Step 5: Solve for x
   x = 11,726,850,953,601/2,187,390
6. Step 6: Final answer
   x = 5,361,115.74