Finding the Third Proportional to 256,441.25 and 552,320

Step by Step Solution

1. Step 1: Write the proportion equation
   256,441.25 : 552,320 = 552,320 : x
2. Step 2: Convert to fraction form
   256,441.25/552,320 = 552,320/x
3. Step 3: Cross multiply
   256,441.25x = 552,320 × 552,320
4. Step 4: Simplify right side
   256,441.25x = 305,057,382,400
5. Step 5: Solve for x
   x = 305,057,382,400/256,441.25
6. Step 6: Final answer
   x = 1,189,580.00