Finding the Third Proportional to 817,886 and 1,787,404

Step by Step Solution

1. Step 1: Write the proportion equation
   817,886 : 1,787,404 = 1,787,404 : x
2. Step 2: Convert to fraction form
   817,886/1,787,404 = 1,787,404/x
3. Step 3: Cross multiply
   817,886x = 1,787,404 × 1,787,404
4. Step 4: Simplify right side
   817,886x = 3,194,813,059,216
5. Step 5: Solve for x
   x = 3,194,813,059,216/817,886
6. Step 6: Final answer
   x = 3,906,183.82