Finding the Third Proportional to 30,997 and 67,145

Step by Step Solution

1. Step 1: Write the proportion equation
   30,997 : 67,145 = 67,145 : x
2. Step 2: Convert to fraction form
   30,997/67,145 = 67,145/x
3. Step 3: Cross multiply
   30,997x = 67,145 × 67,145
4. Step 4: Simplify right side
   30,997x = 4,508,451,025
5. Step 5: Solve for x
   x = 4,508,451,025/30,997
6. Step 6: Final answer
   x = 145,447.98