Finding the Third Proportional to 16,200 and 17,672

Step by Step Solution

1. Step 1: Write the proportion equation
   16,200 : 17,672 = 17,672 : x
2. Step 2: Convert to fraction form
   16,200/17,672 = 17,672/x
3. Step 3: Cross multiply
   16,200x = 17,672 × 17,672
4. Step 4: Simplify right side
   16,200x = 312,299,584
5. Step 5: Solve for x
   x = 312,299,584/16,200
6. Step 6: Final answer
   x = 19,277.75