Finding the Third Proportional to 844,684 and 1,821,398

Step by Step Solution

1. Step 1: Write the proportion equation
   844,684 : 1,821,398 = 1,821,398 : x
2. Step 2: Convert to fraction form
   844,684/1,821,398 = 1,821,398/x
3. Step 3: Cross multiply
   844,684x = 1,821,398 × 1,821,398
4. Step 4: Simplify right side
   844,684x = 3,317,490,674,404
5. Step 5: Solve for x
   x = 3,317,490,674,404/844,684
6. Step 6: Final answer
   x = 3,927,493.21