Finding the Third Proportional to 17,156 and 18,956

Step by Step Solution

1. Step 1: Write the proportion equation
   17,156 : 18,956 = 18,956 : x
2. Step 2: Convert to fraction form
   17,156/18,956 = 18,956/x
3. Step 3: Cross multiply
   17,156x = 18,956 × 18,956
4. Step 4: Simplify right side
   17,156x = 359,329,936
5. Step 5: Solve for x
   x = 359,329,936/17,156
6. Step 6: Final answer
   x = 20,944.86