Finding the Third Proportional to 1,620.50 and 3,529

Step by Step Solution

1. Step 1: Write the proportion equation
   1,620.50 : 3,529 = 3,529 : x
2. Step 2: Convert to fraction form
   1,620.50/3,529 = 3,529/x
3. Step 3: Cross multiply
   1,620.50x = 3,529 × 3,529
4. Step 4: Simplify right side
   1,620.50x = 12,453,841
5. Step 5: Solve for x
   x = 12,453,841/1,620.50
6. Step 6: Final answer
   x = 7,685.18