Finding the Third Proportional to 261,144 and 544,992

Step by Step Solution

1. Step 1: Write the proportion equation
   261,144 : 544,992 = 544,992 : x
2. Step 2: Convert to fraction form
   261,144/544,992 = 544,992/x
3. Step 3: Cross multiply
   261,144x = 544,992 × 544,992
4. Step 4: Simplify right side
   261,144x = 297,016,280,064
5. Step 5: Solve for x
   x = 297,016,280,064/261,144
6. Step 6: Final answer
   x = 1,137,365.90