Finding the Third Proportional to 9,687.73 and 13,147.63

Step by Step Solution

1. Step 1: Write the proportion equation
   9,687.73 : 13,147.63 = 13,147.63 : x
2. Step 2: Convert to fraction form
   9,687.73/13,147.63 = 13,147.63/x
3. Step 3: Cross multiply
   9,687.73x = 13,147.63 × 13,147.63
4. Step 4: Simplify right side
   9,687.73x = 172,860,145.86
5. Step 5: Solve for x
   x = 172,860,145.86/9,687.73
6. Step 6: Final answer
   x = 17,843.21