Finding the Third Proportional to 21,072.38 and 31,597.88

Step by Step Solution

1. Step 1: Write the proportion equation
   21,072.38 : 31,597.88 = 31,597.88 : x
2. Step 2: Convert to fraction form
   21,072.38/31,597.88 = 31,597.88/x
3. Step 3: Cross multiply
   21,072.38x = 31,597.88 × 31,597.88
4. Step 4: Simplify right side
   21,072.38x = 998,425,704.52
5. Step 5: Solve for x
   x = 998,425,704.52/21,072.38
6. Step 6: Final answer
   x = 47,380.79