Finding the Third Proportional to 1,205,809 and 1,866,233

Step by Step Solution

1. Step 1: Write the proportion equation
   1,205,809 : 1,866,233 = 1,866,233 : x
2. Step 2: Convert to fraction form
   1,205,809/1,866,233 = 1,866,233/x
3. Step 3: Cross multiply
   1,205,809x = 1,866,233 × 1,866,233
4. Step 4: Simplify right side
   1,205,809x = 3,482,825,610,289
5. Step 5: Solve for x
   x = 3,482,825,610,289/1,205,809
6. Step 6: Final answer
   x = 2,888,372.55