Finding the Third Proportional to 851,498 and 1,280,799

Step by Step Solution

1. Step 1: Write the proportion equation
   851,498 : 1,280,799 = 1,280,799 : x
2. Step 2: Convert to fraction form
   851,498/1,280,799 = 1,280,799/x
3. Step 3: Cross multiply
   851,498x = 1,280,799 × 1,280,799
4. Step 4: Simplify right side
   851,498x = 1,640,446,078,401
5. Step 5: Solve for x
   x = 1,640,446,078,401/851,498
6. Step 6: Final answer
   x = 1,926,541.32