Finding the Third Proportional to 21,201 and 31,151

Step by Step Solution

1. Step 1: Write the proportion equation
   21,201 : 31,151 = 31,151 : x
2. Step 2: Convert to fraction form
   21,201/31,151 = 31,151/x
3. Step 3: Cross multiply
   21,201x = 31,151 × 31,151
4. Step 4: Simplify right side
   21,201x = 970,384,801
5. Step 5: Solve for x
   x = 970,384,801/21,201
6. Step 6: Final answer
   x = 45,770.71