Finding the Third Proportional to 162,972 and 336,096

Step by Step Solution

1. Step 1: Write the proportion equation
   162,972 : 336,096 = 336,096 : x
2. Step 2: Convert to fraction form
   162,972/336,096 = 336,096/x
3. Step 3: Cross multiply
   162,972x = 336,096 × 336,096
4. Step 4: Simplify right side
   162,972x = 112,960,521,216
5. Step 5: Solve for x
   x = 112,960,521,216/162,972
6. Step 6: Final answer
   x = 693,128.40