Finding the Third Proportional to 13,672.13 and 20,631.38

Step by Step Solution

1. Step 1: Write the proportion equation
   13,672.13 : 20,631.38 = 20,631.38 : x
2. Step 2: Convert to fraction form
   13,672.13/20,631.38 = 20,631.38/x
3. Step 3: Cross multiply
   13,672.13x = 20,631.38 × 20,631.38
4. Step 4: Simplify right side
   13,672.13x = 425,653,634.39
5. Step 5: Solve for x
   x = 425,653,634.39/13,672.13
6. Step 6: Final answer
   x = 31,132.95