Finding the Third Proportional to 1,418,990 and 2,203,108

Step by Step Solution

1. Step 1: Write the proportion equation
   1,418,990 : 2,203,108 = 2,203,108 : x
2. Step 2: Convert to fraction form
   1,418,990/2,203,108 = 2,203,108/x
3. Step 3: Cross multiply
   1,418,990x = 2,203,108 × 2,203,108
4. Step 4: Simplify right side
   1,418,990x = 4,853,684,859,664
5. Step 5: Solve for x
   x = 4,853,684,859,664/1,418,990
6. Step 6: Final answer
   x = 3,420,520.84