Finding the Third Proportional to 9,391 and 12,648.50

Step by Step Solution

1. Step 1: Write the proportion equation
   9,391 : 12,648.50 = 12,648.50 : x
2. Step 2: Convert to fraction form
   9,391/12,648.50 = 12,648.50/x
3. Step 3: Cross multiply
   9,391x = 12,648.50 × 12,648.50
4. Step 4: Simplify right side
   9,391x = 159,984,552.25
5. Step 5: Solve for x
   x = 159,984,552.25/9,391
6. Step 6: Final answer
   x = 17,035.94