Finding the Third Proportional to 131,434.50 and 287,193

Step by Step Solution

1. Step 1: Write the proportion equation
   131,434.50 : 287,193 = 287,193 : x
2. Step 2: Convert to fraction form
   131,434.50/287,193 = 287,193/x
3. Step 3: Cross multiply
   131,434.50x = 287,193 × 287,193
4. Step 4: Simplify right side
   131,434.50x = 82,479,819,249
5. Step 5: Solve for x
   x = 82,479,819,249/131,434.50
6. Step 6: Final answer
   x = 627,535.53