Finding the Third Proportional to 3,180 and 3,516

Step by Step Solution

1. Step 1: Write the proportion equation
   3,180 : 3,516 = 3,516 : x
2. Step 2: Convert to fraction form
   3,180/3,516 = 3,516/x
3. Step 3: Cross multiply
   3,180x = 3,516 × 3,516
4. Step 4: Simplify right side
   3,180x = 12,362,256
5. Step 5: Solve for x
   x = 12,362,256/3,180
6. Step 6: Final answer
   x = 3,887.50