Finding the Third Proportional to 56,451 and 123,270

Step by Step Solution

1. Step 1: Write the proportion equation
   56,451 : 123,270 = 123,270 : x
2. Step 2: Convert to fraction form
   56,451/123,270 = 123,270/x
3. Step 3: Cross multiply
   56,451x = 123,270 × 123,270
4. Step 4: Simplify right side
   56,451x = 15,195,492,900
5. Step 5: Solve for x
   x = 15,195,492,900/56,451
6. Step 6: Final answer
   x = 269,180.23