Finding the Third Proportional to 7,200 and 17,510

Step by Step Solution

1. Step 1: Write the proportion equation
   7,200 : 17,510 = 17,510 : x
2. Step 2: Convert to fraction form
   7,200/17,510 = 17,510/x
3. Step 3: Cross multiply
   7,200x = 17,510 × 17,510
4. Step 4: Simplify right side
   7,200x = 306,600,100
5. Step 5: Solve for x
   x = 306,600,100/7,200
6. Step 6: Final answer
   x = 42,583.35