Finding the Third Proportional to 21,256 and 31,236

Step by Step Solution

1. Step 1: Write the proportion equation
   21,256 : 31,236 = 31,236 : x
2. Step 2: Convert to fraction form
   21,256/31,236 = 31,236/x
3. Step 3: Cross multiply
   21,256x = 31,236 × 31,236
4. Step 4: Simplify right side
   21,256x = 975,687,696
5. Step 5: Solve for x
   x = 975,687,696/21,256
6. Step 6: Final answer
   x = 45,901.75