Finding the Third Proportional to 21,021 and 45,231

Step by Step Solution

1. Step 1: Write the proportion equation
   21,021 : 45,231 = 45,231 : x
2. Step 2: Convert to fraction form
   21,021/45,231 = 45,231/x
3. Step 3: Cross multiply
   21,021x = 45,231 × 45,231
4. Step 4: Simplify right side
   21,021x = 2,045,843,361
5. Step 5: Solve for x
   x = 2,045,843,361/21,021
6. Step 6: Final answer
   x = 97,323.79