Finding the Third Proportional to 568,638 and 853,224.50

Step by Step Solution

1. Step 1: Write the proportion equation
   568,638 : 853,224.50 = 853,224.50 : x
2. Step 2: Convert to fraction form
   568,638/853,224.50 = 853,224.50/x
3. Step 3: Cross multiply
   568,638x = 853,224.50 × 853,224.50
4. Step 4: Simplify right side
   568,638x = 727,992,047,400.25
5. Step 5: Solve for x
   x = 727,992,047,400.25/568,638
6. Step 6: Final answer
   x = 1,280,238.13