Finding the Third Proportional to 598,387 and 1,280,830

Step by Step Solution

1. Step 1: Write the proportion equation
   598,387 : 1,280,830 = 1,280,830 : x
2. Step 2: Convert to fraction form
   598,387/1,280,830 = 1,280,830/x
3. Step 3: Cross multiply
   598,387x = 1,280,830 × 1,280,830
4. Step 4: Simplify right side
   598,387x = 1,640,525,488,900
5. Step 5: Solve for x
   x = 1,640,525,488,900/598,387
6. Step 6: Final answer
   x = 2,741,579.43