Finding the Third Proportional to 872,598 and 1,280,166

Step by Step Solution

1. Step 1: Write the proportion equation
   872,598 : 1,280,166 = 1,280,166 : x
2. Step 2: Convert to fraction form
   872,598/1,280,166 = 1,280,166/x
3. Step 3: Cross multiply
   872,598x = 1,280,166 × 1,280,166
4. Step 4: Simplify right side
   872,598x = 1,638,824,987,556
5. Step 5: Solve for x
   x = 1,638,824,987,556/872,598
6. Step 6: Final answer
   x = 1,878,098.49