Finding the Third Proportional to 212,910 and 333,993

Step by Step Solution

1. Step 1: Write the proportion equation
   212,910 : 333,993 = 333,993 : x
2. Step 2: Convert to fraction form
   212,910/333,993 = 333,993/x
3. Step 3: Cross multiply
   212,910x = 333,993 × 333,993
4. Step 4: Simplify right side
   212,910x = 111,551,324,049
5. Step 5: Solve for x
   x = 111,551,324,049/212,910
6. Step 6: Final answer
   x = 523,936.52