Finding the Third Proportional to 9,173 and 12,386.50

Step by Step Solution

1. Step 1: Write the proportion equation
   9,173 : 12,386.50 = 12,386.50 : x
2. Step 2: Convert to fraction form
   9,173/12,386.50 = 12,386.50/x
3. Step 3: Cross multiply
   9,173x = 12,386.50 × 12,386.50
4. Step 4: Simplify right side
   9,173x = 153,425,382.25
5. Step 5: Solve for x
   x = 153,425,382.25/9,173
6. Step 6: Final answer
   x = 16,725.76