Finding the Third Proportional to 876,087 and 1,280,870

Step by Step Solution

1. Step 1: Write the proportion equation
   876,087 : 1,280,870 = 1,280,870 : x
2. Step 2: Convert to fraction form
   876,087/1,280,870 = 1,280,870/x
3. Step 3: Cross multiply
   876,087x = 1,280,870 × 1,280,870
4. Step 4: Simplify right side
   876,087x = 1,640,627,956,900
5. Step 5: Solve for x
   x = 1,640,627,956,900/876,087
6. Step 6: Final answer
   x = 1,872,676.98