Finding the Third Proportional to 56,671 and 123,517

Step by Step Solution

1. Step 1: Write the proportion equation
   56,671 : 123,517 = 123,517 : x
2. Step 2: Convert to fraction form
   56,671/123,517 = 123,517/x
3. Step 3: Cross multiply
   56,671x = 123,517 × 123,517
4. Step 4: Simplify right side
   56,671x = 15,256,449,289
5. Step 5: Solve for x
   x = 15,256,449,289/56,671
6. Step 6: Final answer
   x = 269,210.87