Finding the Third Proportional to 3,180.75 and 7,144.50

Step by Step Solution

1. Step 1: Write the proportion equation
   3,180.75 : 7,144.50 = 7,144.50 : x
2. Step 2: Convert to fraction form
   3,180.75/7,144.50 = 7,144.50/x
3. Step 3: Cross multiply
   3,180.75x = 7,144.50 × 7,144.50
4. Step 4: Simplify right side
   3,180.75x = 51,043,880.25
5. Step 5: Solve for x
   x = 51,043,880.25/3,180.75
6. Step 6: Final answer
   x = 16,047.75