Finding the Third Proportional to 248,589 and 428,044.50

Step by Step Solution

1. Step 1: Write the proportion equation
   248,589 : 428,044.50 = 428,044.50 : x
2. Step 2: Convert to fraction form
   248,589/428,044.50 = 428,044.50/x
3. Step 3: Cross multiply
   248,589x = 428,044.50 × 428,044.50
4. Step 4: Simplify right side
   248,589x = 183,222,093,980.25
5. Step 5: Solve for x
   x = 183,222,093,980.25/248,589
6. Step 6: Final answer
   x = 737,048.28