Finding the Third Proportional to 2,128 and 3,208

Step by Step Solution

1. Step 1: Write the proportion equation
   2,128 : 3,208 = 3,208 : x
2. Step 2: Convert to fraction form
   2,128/3,208 = 3,208/x
3. Step 3: Cross multiply
   2,128x = 3,208 × 3,208
4. Step 4: Simplify right side
   2,128x = 10,291,264
5. Step 5: Solve for x
   x = 10,291,264/2,128
6. Step 6: Final answer
   x = 4,836.12