Finding the Third Proportional to 840,756 and 1,280,574

Step by Step Solution

1. Step 1: Write the proportion equation
   840,756 : 1,280,574 = 1,280,574 : x
2. Step 2: Convert to fraction form
   840,756/1,280,574 = 1,280,574/x
3. Step 3: Cross multiply
   840,756x = 1,280,574 × 1,280,574
4. Step 4: Simplify right side
   840,756x = 1,639,869,769,476
5. Step 5: Solve for x
   x = 1,639,869,769,476/840,756
6. Step 6: Final answer
   x = 1,950,470.49