Finding the Third Proportional to 151,408.50 and 318,504

Step by Step Solution

1. Step 1: Write the proportion equation
   151,408.50 : 318,504 = 318,504 : x
2. Step 2: Convert to fraction form
   151,408.50/318,504 = 318,504/x
3. Step 3: Cross multiply
   151,408.50x = 318,504 × 318,504
4. Step 4: Simplify right side
   151,408.50x = 101,444,798,016
5. Step 5: Solve for x
   x = 101,444,798,016/151,408.50
6. Step 6: Final answer
   x = 670,007.29