Finding the Third Proportional to 253,288.69 and 356,239.69

Step by Step Solution

1. Step 1: Write the proportion equation
   253,288.69 : 356,239.69 = 356,239.69 : x
2. Step 2: Convert to fraction form
   253,288.69/356,239.69 = 356,239.69/x
3. Step 3: Cross multiply
   253,288.69x = 356,239.69 × 356,239.69
4. Step 4: Simplify right side
   253,288.69x = 126,906,714,950.10
5. Step 5: Solve for x
   x = 126,906,714,950.10/253,288.69
6. Step 6: Final answer
   x = 501,035.86