Finding the Third Proportional to 9,603.50 and 12,917

Step by Step Solution

1. Step 1: Write the proportion equation
   9,603.50 : 12,917 = 12,917 : x
2. Step 2: Convert to fraction form
   9,603.50/12,917 = 12,917/x
3. Step 3: Cross multiply
   9,603.50x = 12,917 × 12,917
4. Step 4: Simplify right side
   9,603.50x = 166,848,889
5. Step 5: Solve for x
   x = 166,848,889/9,603.50
6. Step 6: Final answer
   x = 17,373.76