Finding the Third Proportional to 1,209,861 and 1,644,103

Step by Step Solution

1. Step 1: Write the proportion equation
   1,209,861 : 1,644,103 = 1,644,103 : x
2. Step 2: Convert to fraction form
   1,209,861/1,644,103 = 1,644,103/x
3. Step 3: Cross multiply
   1,209,861x = 1,644,103 × 1,644,103
4. Step 4: Simplify right side
   1,209,861x = 2,703,074,674,609
5. Step 5: Solve for x
   x = 2,703,074,674,609/1,209,861
6. Step 6: Final answer
   x = 2,234,202.67