Finding the Third Proportional to 13,620.38 and 20,826.75

Step by Step Solution

1. Step 1: Write the proportion equation
   13,620.38 : 20,826.75 = 20,826.75 : x
2. Step 2: Convert to fraction form
   13,620.38/20,826.75 = 20,826.75/x
3. Step 3: Cross multiply
   13,620.38x = 20,826.75 × 20,826.75
4. Step 4: Simplify right side
   13,620.38x = 433,753,515.56
5. Step 5: Solve for x
   x = 433,753,515.56/13,620.38
6. Step 6: Final answer
   x = 31,845.93