Finding the Third Proportional to 1,556 and 3,216.50

Step by Step Solution

1. Step 1: Write the proportion equation
   1,556 : 3,216.50 = 3,216.50 : x
2. Step 2: Convert to fraction form
   1,556/3,216.50 = 3,216.50/x
3. Step 3: Cross multiply
   1,556x = 3,216.50 × 3,216.50
4. Step 4: Simplify right side
   1,556x = 10,345,872.25
5. Step 5: Solve for x
   x = 10,345,872.25/1,556
6. Step 6: Final answer
   x = 6,649.02