Finding the Third Proportional to 123,384.50 and 256,104

Step by Step Solution

1. Step 1: Write the proportion equation
   123,384.50 : 256,104 = 256,104 : x
2. Step 2: Convert to fraction form
   123,384.50/256,104 = 256,104/x
3. Step 3: Cross multiply
   123,384.50x = 256,104 × 256,104
4. Step 4: Simplify right side
   123,384.50x = 65,589,258,816
5. Step 5: Solve for x
   x = 65,589,258,816/123,384.50
6. Step 6: Final answer
   x = 531,584.27