Finding the Third Proportional to 161,588 and 331,012

Step by Step Solution

1. Step 1: Write the proportion equation
   161,588 : 331,012 = 331,012 : x
2. Step 2: Convert to fraction form
   161,588/331,012 = 331,012/x
3. Step 3: Cross multiply
   161,588x = 331,012 × 331,012
4. Step 4: Simplify right side
   161,588x = 109,568,944,144
5. Step 5: Solve for x
   x = 109,568,944,144/161,588
6. Step 6: Final answer
   x = 678,076.00