Finding the Third Proportional to 245,728.69 and 538,786.69

Step by Step Solution

1. Step 1: Write the proportion equation
   245,728.69 : 538,786.69 = 538,786.69 : x
2. Step 2: Convert to fraction form
   245,728.69/538,786.69 = 538,786.69/x
3. Step 3: Cross multiply
   245,728.69x = 538,786.69 × 538,786.69
4. Step 4: Simplify right side
   245,728.69x = 290,291,094,627.22
5. Step 5: Solve for x
   x = 290,291,094,627.22/245,728.69
6. Step 6: Final answer
   x = 1,181,348.00