Finding the Third Proportional to 844,678 and 1,821,386

Step by Step Solution

1. Step 1: Write the proportion equation
   844,678 : 1,821,386 = 1,821,386 : x
2. Step 2: Convert to fraction form
   844,678/1,821,386 = 1,821,386/x
3. Step 3: Cross multiply
   844,678x = 1,821,386 × 1,821,386
4. Step 4: Simplify right side
   844,678x = 3,317,446,960,996
5. Step 5: Solve for x
   x = 3,317,446,960,996/844,678
6. Step 6: Final answer
   x = 3,927,469.36