Finding the Third Proportional to 56,991.09 and 123,717.38

Step by Step Solution

1. Step 1: Write the proportion equation
   56,991.09 : 123,717.38 = 123,717.38 : x
2. Step 2: Convert to fraction form
   56,991.09/123,717.38 = 123,717.38/x
3. Step 3: Cross multiply
   56,991.09x = 123,717.38 × 123,717.38
4. Step 4: Simplify right side
   56,991.09x = 15,305,988,876.89
5. Step 5: Solve for x
   x = 15,305,988,876.89/56,991.09
6. Step 6: Final answer
   x = 268,568.08