Finding the Third Proportional to 134,469.50 and 289,686

Step by Step Solution

1. Step 1: Write the proportion equation
   134,469.50 : 289,686 = 289,686 : x
2. Step 2: Convert to fraction form
   134,469.50/289,686 = 289,686/x
3. Step 3: Cross multiply
   134,469.50x = 289,686 × 289,686
4. Step 4: Simplify right side
   134,469.50x = 83,917,978,596
5. Step 5: Solve for x
   x = 83,917,978,596/134,469.50
6. Step 6: Final answer
   x = 624,067.01