Finding the Third Proportional to 851,690 and 1,843,636

Step by Step Solution

1. Step 1: Write the proportion equation
   851,690 : 1,843,636 = 1,843,636 : x
2. Step 2: Convert to fraction form
   851,690/1,843,636 = 1,843,636/x
3. Step 3: Cross multiply
   851,690x = 1,843,636 × 1,843,636
4. Step 4: Simplify right side
   851,690x = 3,398,993,700,496
5. Step 5: Solve for x
   x = 3,398,993,700,496/851,690
6. Step 6: Final answer
   x = 3,990,881.31