Finding the Third Proportional to 131,467 and 287,812

Step by Step Solution

1. Step 1: Write the proportion equation
   131,467 : 287,812 = 287,812 : x
2. Step 2: Convert to fraction form
   131,467/287,812 = 287,812/x
3. Step 3: Cross multiply
   131,467x = 287,812 × 287,812
4. Step 4: Simplify right side
   131,467x = 82,835,747,344
5. Step 5: Solve for x
   x = 82,835,747,344/131,467
6. Step 6: Final answer
   x = 630,087.76