Finding the Third Proportional to 1,205,806 and 1,866,231

Step by Step Solution

1. Step 1: Write the proportion equation
   1,205,806 : 1,866,231 = 1,866,231 : x
2. Step 2: Convert to fraction form
   1,205,806/1,866,231 = 1,866,231/x
3. Step 3: Cross multiply
   1,205,806x = 1,866,231 × 1,866,231
4. Step 4: Simplify right side
   1,205,806x = 3,482,818,145,361
5. Step 5: Solve for x
   x = 3,482,818,145,361/1,205,806
6. Step 6: Final answer
   x = 2,888,373.54