Finding the Third Proportional to 131,453 and 287,227

Step by Step Solution

1. Step 1: Write the proportion equation
   131,453 : 287,227 = 287,227 : x
2. Step 2: Convert to fraction form
   131,453/287,227 = 287,227/x
3. Step 3: Cross multiply
   131,453x = 287,227 × 287,227
4. Step 4: Simplify right side
   131,453x = 82,499,349,529
5. Step 5: Solve for x
   x = 82,499,349,529/131,453
6. Step 6: Final answer
   x = 627,595.79