Finding the Third Proportional to 2,621.50 and 3,500

Step by Step Solution

1. Step 1: Write the proportion equation
   2,621.50 : 3,500 = 3,500 : x
2. Step 2: Convert to fraction form
   2,621.50/3,500 = 3,500/x
3. Step 3: Cross multiply
   2,621.50x = 3,500 × 3,500
4. Step 4: Simplify right side
   2,621.50x = 12,250,000
5. Step 5: Solve for x
   x = 12,250,000/2,621.50
6. Step 6: Final answer
   x = 4,672.90