Finding the Third Proportional to 3,578 and 5,488

Step by Step Solution

1. Step 1: Write the proportion equation
   3,578 : 5,488 = 5,488 : x
2. Step 2: Convert to fraction form
   3,578/5,488 = 5,488/x
3. Step 3: Cross multiply
   3,578x = 5,488 × 5,488
4. Step 4: Simplify right side
   3,578x = 30,118,144
5. Step 5: Solve for x
   x = 30,118,144/3,578
6. Step 6: Final answer
   x = 8,417.59