Finding the Third Proportional to 131,296 and 287,756

Step by Step Solution

1. Step 1: Write the proportion equation
   131,296 : 287,756 = 287,756 : x
2. Step 2: Convert to fraction form
   131,296/287,756 = 287,756/x
3. Step 3: Cross multiply
   131,296x = 287,756 × 287,756
4. Step 4: Simplify right side
   131,296x = 82,803,515,536
5. Step 5: Solve for x
   x = 82,803,515,536/131,296
6. Step 6: Final answer
   x = 630,662.90