Finding the Third Proportional to 10,909.69 and 18,106.03

Step by Step Solution

1. Step 1: Write the proportion equation
   10,909.69 : 18,106.03 = 18,106.03 : x
2. Step 2: Convert to fraction form
   10,909.69/18,106.03 = 18,106.03/x
3. Step 3: Cross multiply
   10,909.69x = 18,106.03 × 18,106.03
4. Step 4: Simplify right side
   10,909.69x = 327,828,367.63
5. Step 5: Solve for x
   x = 327,828,367.63/10,909.69
6. Step 6: Final answer
   x = 30,049.29