Finding the Third Proportional to 9,159.75 and 13,145.63

Step by Step Solution

1. Step 1: Write the proportion equation
   9,159.75 : 13,145.63 = 13,145.63 : x
2. Step 2: Convert to fraction form
   9,159.75/13,145.63 = 13,145.63/x
3. Step 3: Cross multiply
   9,159.75x = 13,145.63 × 13,145.63
4. Step 4: Simplify right side
   9,159.75x = 172,807,456.64
5. Step 5: Solve for x
   x = 172,807,456.64/9,159.75
6. Step 6: Final answer
   x = 18,865.96