Finding the Third Proportional to 132,668 and 205,428

Step by Step Solution

1. Step 1: Write the proportion equation
   132,668 : 205,428 = 205,428 : x
2. Step 2: Convert to fraction form
   132,668/205,428 = 205,428/x
3. Step 3: Cross multiply
   132,668x = 205,428 × 205,428
4. Step 4: Simplify right side
   132,668x = 42,200,663,184
5. Step 5: Solve for x
   x = 42,200,663,184/132,668
6. Step 6: Final answer
   x = 318,092.25