Finding the Third Proportional to 56,668 and 123,272

Step by Step Solution

1. Step 1: Write the proportion equation
   56,668 : 123,272 = 123,272 : x
2. Step 2: Convert to fraction form
   56,668/123,272 = 123,272/x
3. Step 3: Cross multiply
   56,668x = 123,272 × 123,272
4. Step 4: Simplify right side
   56,668x = 15,195,985,984
5. Step 5: Solve for x
   x = 15,195,985,984/56,668
6. Step 6: Final answer
   x = 268,158.15