Finding the Third Proportional to 80,245.69 and 170,287.31

Step by Step Solution

1. Step 1: Write the proportion equation
   80,245.69 : 170,287.31 = 170,287.31 : x
2. Step 2: Convert to fraction form
   80,245.69/170,287.31 = 170,287.31/x
3. Step 3: Cross multiply
   80,245.69x = 170,287.31 × 170,287.31
4. Step 4: Simplify right side
   80,245.69x = 28,997,768,798.47
5. Step 5: Solve for x
   x = 28,997,768,798.47/80,245.69
6. Step 6: Final answer
   x = 361,362.33