Finding the Third Proportional to 21,039 and 31,375

Step by Step Solution

1. Step 1: Write the proportion equation
   21,039 : 31,375 = 31,375 : x
2. Step 2: Convert to fraction form
   21,039/31,375 = 31,375/x
3. Step 3: Cross multiply
   21,039x = 31,375 × 31,375
4. Step 4: Simplify right side
   21,039x = 984,390,625
5. Step 5: Solve for x
   x = 984,390,625/21,039
6. Step 6: Final answer
   x = 46,788.85