Finding the Third Proportional to 1,628 and 3,558.50

Step by Step Solution

1. Step 1: Write the proportion equation
   1,628 : 3,558.50 = 3,558.50 : x
2. Step 2: Convert to fraction form
   1,628/3,558.50 = 3,558.50/x
3. Step 3: Cross multiply
   1,628x = 3,558.50 × 3,558.50
4. Step 4: Simplify right side
   1,628x = 12,662,922.25
5. Step 5: Solve for x
   x = 12,662,922.25/1,628
6. Step 6: Final answer
   x = 7,778.21