Finding the Third Proportional to 59,780 and 131,170

Step by Step Solution

1. Step 1: Write the proportion equation
   59,780 : 131,170 = 131,170 : x
2. Step 2: Convert to fraction form
   59,780/131,170 = 131,170/x
3. Step 3: Cross multiply
   59,780x = 131,170 × 131,170
4. Step 4: Simplify right side
   59,780x = 17,205,568,900
5. Step 5: Solve for x
   x = 17,205,568,900/59,780
6. Step 6: Final answer
   x = 287,814.80