Finding the Third Proportional to 131,168 and 287,554

Step by Step Solution

1. Step 1: Write the proportion equation
   131,168 : 287,554 = 287,554 : x
2. Step 2: Convert to fraction form
   131,168/287,554 = 287,554/x
3. Step 3: Cross multiply
   131,168x = 287,554 × 287,554
4. Step 4: Simplify right side
   131,168x = 82,687,302,916
5. Step 5: Solve for x
   x = 82,687,302,916/131,168
6. Step 6: Final answer
   x = 630,392.34