Finding the Third Proportional to 872,586 and 1,280,151

Step by Step Solution

1. Step 1: Write the proportion equation
   872,586 : 1,280,151 = 1,280,151 : x
2. Step 2: Convert to fraction form
   872,586/1,280,151 = 1,280,151/x
3. Step 3: Cross multiply
   872,586x = 1,280,151 × 1,280,151
4. Step 4: Simplify right side
   872,586x = 1,638,786,582,801
5. Step 5: Solve for x
   x = 1,638,786,582,801/872,586
6. Step 6: Final answer
   x = 1,878,080.31