Finding the Third Proportional to 3,280 and 3,528

Step by Step Solution

1. Step 1: Write the proportion equation
   3,280 : 3,528 = 3,528 : x
2. Step 2: Convert to fraction form
   3,280/3,528 = 3,528/x
3. Step 3: Cross multiply
   3,280x = 3,528 × 3,528
4. Step 4: Simplify right side
   3,280x = 12,446,784
5. Step 5: Solve for x
   x = 12,446,784/3,280
6. Step 6: Final answer
   x = 3,794.75