Finding the Third Proportional to 153,960 and 320,016

Step by Step Solution

1. Step 1: Write the proportion equation
   153,960 : 320,016 = 320,016 : x
2. Step 2: Convert to fraction form
   153,960/320,016 = 320,016/x
3. Step 3: Cross multiply
   153,960x = 320,016 × 320,016
4. Step 4: Simplify right side
   153,960x = 102,410,240,256
5. Step 5: Solve for x
   x = 102,410,240,256/153,960
6. Step 6: Final answer
   x = 665,174.33