Finding the Third Proportional to 128,067.64 and 281,046.59

Step by Step Solution

1. Step 1: Write the proportion equation
   128,067.64 : 281,046.59 = 281,046.59 : x
2. Step 2: Convert to fraction form
   128,067.64/281,046.59 = 281,046.59/x
3. Step 3: Cross multiply
   128,067.64x = 281,046.59 × 281,046.59
4. Step 4: Simplify right side
   128,067.64x = 78,987,183,467.12
5. Step 5: Solve for x
   x = 78,987,183,467.12/128,067.64
6. Step 6: Final answer
   x = 616,761.43