Finding the Third Proportional to 131,496 and 287,544

Step by Step Solution

1. Step 1: Write the proportion equation
   131,496 : 287,544 = 287,544 : x
2. Step 2: Convert to fraction form
   131,496/287,544 = 287,544/x
3. Step 3: Cross multiply
   131,496x = 287,544 × 287,544
4. Step 4: Simplify right side
   131,496x = 82,681,551,936
5. Step 5: Solve for x
   x = 82,681,551,936/131,496
6. Step 6: Final answer
   x = 628,776.18