Finding the Third Proportional to 876,100.50 and 1,280,889

Step by Step Solution

1. Step 1: Write the proportion equation
   876,100.50 : 1,280,889 = 1,280,889 : x
2. Step 2: Convert to fraction form
   876,100.50/1,280,889 = 1,280,889/x
3. Step 3: Cross multiply
   876,100.50x = 1,280,889 × 1,280,889
4. Step 4: Simplify right side
   876,100.50x = 1,640,676,630,321
5. Step 5: Solve for x
   x = 1,640,676,630,321/876,100.50
6. Step 6: Final answer
   x = 1,872,703.68