Finding the Third Proportional to 261,320.25 and 554,040

Step by Step Solution

1. Step 1: Write the proportion equation
   261,320.25 : 554,040 = 554,040 : x
2. Step 2: Convert to fraction form
   261,320.25/554,040 = 554,040/x
3. Step 3: Cross multiply
   261,320.25x = 554,040 × 554,040
4. Step 4: Simplify right side
   261,320.25x = 306,960,321,600
5. Step 5: Solve for x
   x = 306,960,321,600/261,320.25
6. Step 6: Final answer
   x = 1,174,651.87