Finding the Third Proportional to 801,616 and 1,200,216

Step by Step Solution

1. Step 1: Write the proportion equation
   801,616 : 1,200,216 = 1,200,216 : x
2. Step 2: Convert to fraction form
   801,616/1,200,216 = 1,200,216/x
3. Step 3: Cross multiply
   801,616x = 1,200,216 × 1,200,216
4. Step 4: Simplify right side
   801,616x = 1,440,518,446,656
5. Step 5: Solve for x
   x = 1,440,518,446,656/801,616
6. Step 6: Final answer
   x = 1,797,018.08