Finding the Third Proportional to 21,292 and 31,188

Step by Step Solution

1. Step 1: Write the proportion equation
   21,292 : 31,188 = 31,188 : x
2. Step 2: Convert to fraction form
   21,292/31,188 = 31,188/x
3. Step 3: Cross multiply
   21,292x = 31,188 × 31,188
4. Step 4: Simplify right side
   21,292x = 972,691,344
5. Step 5: Solve for x
   x = 972,691,344/21,292
6. Step 6: Final answer
   x = 45,683.42