Finding the Third Proportional to 807,900 and 1,228,636

Step by Step Solution

1. Step 1: Write the proportion equation
   807,900 : 1,228,636 = 1,228,636 : x
2. Step 2: Convert to fraction form
   807,900/1,228,636 = 1,228,636/x
3. Step 3: Cross multiply
   807,900x = 1,228,636 × 1,228,636
4. Step 4: Simplify right side
   807,900x = 1,509,546,420,496
5. Step 5: Solve for x
   x = 1,509,546,420,496/807,900
6. Step 6: Final answer
   x = 1,868,481.77