Finding the Third Proportional to 80,160 and 168,960

Step by Step Solution

1. Step 1: Write the proportion equation
   80,160 : 168,960 = 168,960 : x
2. Step 2: Convert to fraction form
   80,160/168,960 = 168,960/x
3. Step 3: Cross multiply
   80,160x = 168,960 × 168,960
4. Step 4: Simplify right side
   80,160x = 28,547,481,600
5. Step 5: Solve for x
   x = 28,547,481,600/80,160
6. Step 6: Final answer
   x = 356,131.26