Finding the Third Proportional to 11,720 and 17,956

Step by Step Solution

1. Step 1: Write the proportion equation
   11,720 : 17,956 = 17,956 : x
2. Step 2: Convert to fraction form
   11,720/17,956 = 17,956/x
3. Step 3: Cross multiply
   11,720x = 17,956 × 17,956
4. Step 4: Simplify right side
   11,720x = 322,417,936
5. Step 5: Solve for x
   x = 322,417,936/11,720
6. Step 6: Final answer
   x = 27,510.06