Finding the Third Proportional to 131,509.50 and 287,622

Step by Step Solution

1. Step 1: Write the proportion equation
   131,509.50 : 287,622 = 287,622 : x
2. Step 2: Convert to fraction form
   131,509.50/287,622 = 287,622/x
3. Step 3: Cross multiply
   131,509.50x = 287,622 × 287,622
4. Step 4: Simplify right side
   131,509.50x = 82,726,414,884
5. Step 5: Solve for x
   x = 82,726,414,884/131,509.50
6. Step 6: Final answer
   x = 629,052.77