Finding the Third Proportional to 2,521 and 3,169.50

Step by Step Solution

1. Step 1: Write the proportion equation
   2,521 : 3,169.50 = 3,169.50 : x
2. Step 2: Convert to fraction form
   2,521/3,169.50 = 3,169.50/x
3. Step 3: Cross multiply
   2,521x = 3,169.50 × 3,169.50
4. Step 4: Simplify right side
   2,521x = 10,045,730.25
5. Step 5: Solve for x
   x = 10,045,730.25/2,521
6. Step 6: Final answer
   x = 3,984.82