Finding the Third Proportional to 162,738 and 342,972

Step by Step Solution

1. Step 1: Write the proportion equation
   162,738 : 342,972 = 342,972 : x
2. Step 2: Convert to fraction form
   162,738/342,972 = 342,972/x
3. Step 3: Cross multiply
   162,738x = 342,972 × 342,972
4. Step 4: Simplify right side
   162,738x = 117,629,792,784
5. Step 5: Solve for x
   x = 117,629,792,784/162,738
6. Step 6: Final answer
   x = 722,817.00