Finding the Third Proportional to 868,223 and 1,861,036

Step by Step Solution

1. Step 1: Write the proportion equation
   868,223 : 1,861,036 = 1,861,036 : x
2. Step 2: Convert to fraction form
   868,223/1,861,036 = 1,861,036/x
3. Step 3: Cross multiply
   868,223x = 1,861,036 × 1,861,036
4. Step 4: Simplify right side
   868,223x = 3,463,454,993,296
5. Step 5: Solve for x
   x = 3,463,454,993,296/868,223
6. Step 6: Final answer
   x = 3,989,130.66