Finding the Third Proportional to 16,687.27 and 17,906.06

Step by Step Solution

1. Step 1: Write the proportion equation
   16,687.27 : 17,906.06 = 17,906.06 : x
2. Step 2: Convert to fraction form
   16,687.27/17,906.06 = 17,906.06/x
3. Step 3: Cross multiply
   16,687.27x = 17,906.06 × 17,906.06
4. Step 4: Simplify right side
   16,687.27x = 320,627,074.25
5. Step 5: Solve for x
   x = 320,627,074.25/16,687.27
6. Step 6: Final answer
   x = 19,213.88