Finding the Third Proportional to 1,198,990 and 2,508,836

Step by Step Solution

1. Step 1: Write the proportion equation
   1,198,990 : 2,508,836 = 2,508,836 : x
2. Step 2: Convert to fraction form
   1,198,990/2,508,836 = 2,508,836/x
3. Step 3: Cross multiply
   1,198,990x = 2,508,836 × 2,508,836
4. Step 4: Simplify right side
   1,198,990x = 6,294,258,074,896
5. Step 5: Solve for x
   x = 6,294,258,074,896/1,198,990
6. Step 6: Final answer
   x = 5,249,633.50