Finding the Third Proportional to 21,188.25 and 31,134.38

Step by Step Solution

1. Step 1: Write the proportion equation
   21,188.25 : 31,134.38 = 31,134.38 : x
2. Step 2: Convert to fraction form
   21,188.25/31,134.38 = 31,134.38/x
3. Step 3: Cross multiply
   21,188.25x = 31,134.38 × 31,134.38
4. Step 4: Simplify right side
   21,188.25x = 969,349,306.64
5. Step 5: Solve for x
   x = 969,349,306.64/21,188.25
6. Step 6: Final answer
   x = 45,749.38