Finding the Third Proportional to 9,131.91 and 13,758.05

Step by Step Solution

1. Step 1: Write the proportion equation
   9,131.91 : 13,758.05 = 13,758.05 : x
2. Step 2: Convert to fraction form
   9,131.91/13,758.05 = 13,758.05/x
3. Step 3: Cross multiply
   9,131.91x = 13,758.05 × 13,758.05
4. Step 4: Simplify right side
   9,131.91x = 189,283,853.81
5. Step 5: Solve for x
   x = 189,283,853.81/9,131.91
6. Step 6: Final answer
   x = 20,727.75