Finding the Third Proportional to 1,209,863 and 1,644,106

Step by Step Solution

1. Step 1: Write the proportion equation
   1,209,863 : 1,644,106 = 1,644,106 : x
2. Step 2: Convert to fraction form
   1,209,863/1,644,106 = 1,644,106/x
3. Step 3: Cross multiply
   1,209,863x = 1,644,106 × 1,644,106
4. Step 4: Simplify right side
   1,209,863x = 2,703,084,539,236
5. Step 5: Solve for x
   x = 2,703,084,539,236/1,209,863
6. Step 6: Final answer
   x = 2,234,207.13