Finding the Third Proportional to 60,990 and 132,668

Step by Step Solution

1. Step 1: Write the proportion equation
   60,990 : 132,668 = 132,668 : x
2. Step 2: Convert to fraction form
   60,990/132,668 = 132,668/x
3. Step 3: Cross multiply
   60,990x = 132,668 × 132,668
4. Step 4: Simplify right side
   60,990x = 17,600,798,224
5. Step 5: Solve for x
   x = 17,600,798,224/60,990
6. Step 6: Final answer
   x = 288,584.98