Finding the Third Proportional to 817,884 and 1,787,400

Step by Step Solution

1. Step 1: Write the proportion equation
   817,884 : 1,787,400 = 1,787,400 : x
2. Step 2: Convert to fraction form
   817,884/1,787,400 = 1,787,400/x
3. Step 3: Cross multiply
   817,884x = 1,787,400 × 1,787,400
4. Step 4: Simplify right side
   817,884x = 3,194,798,760,000
5. Step 5: Solve for x
   x = 3,194,798,760,000/817,884
6. Step 6: Final answer
   x = 3,906,175.89