Finding the Third Proportional to 2,112.50 and 3,170

Step by Step Solution

1. Step 1: Write the proportion equation
   2,112.50 : 3,170 = 3,170 : x
2. Step 2: Convert to fraction form
   2,112.50/3,170 = 3,170/x
3. Step 3: Cross multiply
   2,112.50x = 3,170 × 3,170
4. Step 4: Simplify right side
   2,112.50x = 10,048,900
5. Step 5: Solve for x
   x = 10,048,900/2,112.50
6. Step 6: Final answer
   x = 4,756.88