Finding the Third Proportional to 253,009.50 and 395,067

Step by Step Solution

1. Step 1: Write the proportion equation
   253,009.50 : 395,067 = 395,067 : x
2. Step 2: Convert to fraction form
   253,009.50/395,067 = 395,067/x
3. Step 3: Cross multiply
   253,009.50x = 395,067 × 395,067
4. Step 4: Simplify right side
   253,009.50x = 156,077,934,489
5. Step 5: Solve for x
   x = 156,077,934,489/253,009.50
6. Step 6: Final answer
   x = 616,885.67