Finding the Third Proportional to 2,187,390 and 3,424,450

Step by Step Solution

1. Step 1: Write the proportion equation
   2,187,390 : 3,424,450 = 3,424,450 : x
2. Step 2: Convert to fraction form
   2,187,390/3,424,450 = 3,424,450/x
3. Step 3: Cross multiply
   2,187,390x = 3,424,450 × 3,424,450
4. Step 4: Simplify right side
   2,187,390x = 11,726,857,802,500
5. Step 5: Solve for x
   x = 11,726,857,802,500/2,187,390
6. Step 6: Final answer
   x = 5,361,118.87