Finding the Third Proportional to 161,544 and 331,144

Step by Step Solution

1. Step 1: Write the proportion equation
   161,544 : 331,144 = 331,144 : x
2. Step 2: Convert to fraction form
   161,544/331,144 = 331,144/x
3. Step 3: Cross multiply
   161,544x = 331,144 × 331,144
4. Step 4: Simplify right side
   161,544x = 109,656,348,736
5. Step 5: Solve for x
   x = 109,656,348,736/161,544
6. Step 6: Final answer
   x = 678,801.74