Finding the Third Proportional to 134,365.50 and 209,718

Step by Step Solution

1. Step 1: Write the proportion equation
   134,365.50 : 209,718 = 209,718 : x
2. Step 2: Convert to fraction form
   134,365.50/209,718 = 209,718/x
3. Step 3: Cross multiply
   134,365.50x = 209,718 × 209,718
4. Step 4: Simplify right side
   134,365.50x = 43,981,639,524
5. Step 5: Solve for x
   x = 43,981,639,524/134,365.50
6. Step 6: Final answer
   x = 327,328.37