Finding the Third Proportional to 868,368 and 1,311,626

Step by Step Solution

1. Step 1: Write the proportion equation
   868,368 : 1,311,626 = 1,311,626 : x
2. Step 2: Convert to fraction form
   868,368/1,311,626 = 1,311,626/x
3. Step 3: Cross multiply
   868,368x = 1,311,626 × 1,311,626
4. Step 4: Simplify right side
   868,368x = 1,720,362,763,876
5. Step 5: Solve for x
   x = 1,720,362,763,876/868,368
6. Step 6: Final answer
   x = 1,981,144.82