Finding the Third Proportional to 269,904 and 388,816.50

Step by Step Solution

1. Step 1: Write the proportion equation
   269,904 : 388,816.50 = 388,816.50 : x
2. Step 2: Convert to fraction form
   269,904/388,816.50 = 388,816.50/x
3. Step 3: Cross multiply
   269,904x = 388,816.50 × 388,816.50
4. Step 4: Simplify right side
   269,904x = 151,178,270,672.25
5. Step 5: Solve for x
   x = 151,178,270,672.25/269,904
6. Step 6: Final answer
   x = 560,118.67