Finding the Third Proportional to 287,830 and 610,736

Step by Step Solution

1. Step 1: Write the proportion equation
   287,830 : 610,736 = 610,736 : x
2. Step 2: Convert to fraction form
   287,830/610,736 = 610,736/x
3. Step 3: Cross multiply
   287,830x = 610,736 × 610,736
4. Step 4: Simplify right side
   287,830x = 372,998,461,696
5. Step 5: Solve for x
   x = 372,998,461,696/287,830
6. Step 6: Final answer
   x = 1,295,898.49