Finding the Third Proportional to 1,621 and 3,552.50

Step by Step Solution

1. Step 1: Write the proportion equation
   1,621 : 3,552.50 = 3,552.50 : x
2. Step 2: Convert to fraction form
   1,621/3,552.50 = 3,552.50/x
3. Step 3: Cross multiply
   1,621x = 3,552.50 × 3,552.50
4. Step 4: Simplify right side
   1,621x = 12,620,256.25
5. Step 5: Solve for x
   x = 12,620,256.25/1,621
6. Step 6: Final answer
   x = 7,785.48