Finding the Third Proportional to 851,808 and 1,821,806

Step by Step Solution

1. Step 1: Write the proportion equation
   851,808 : 1,821,806 = 1,821,806 : x
2. Step 2: Convert to fraction form
   851,808/1,821,806 = 1,821,806/x
3. Step 3: Cross multiply
   851,808x = 1,821,806 × 1,821,806
4. Step 4: Simplify right side
   851,808x = 3,318,977,101,636
5. Step 5: Solve for x
   x = 3,318,977,101,636/851,808
6. Step 6: Final answer
   x = 3,896,391.09