Finding the Third Proportional to 131,166 and 287,550

Step by Step Solution

1. Step 1: Write the proportion equation
   131,166 : 287,550 = 287,550 : x
2. Step 2: Convert to fraction form
   131,166/287,550 = 287,550/x
3. Step 3: Cross multiply
   131,166x = 287,550 × 287,550
4. Step 4: Simplify right side
   131,166x = 82,685,002,500
5. Step 5: Solve for x
   x = 82,685,002,500/131,166
6. Step 6: Final answer
   x = 630,384.42