Finding the Third Proportional to 128,996.25 and 303,531

Step by Step Solution

1. Step 1: Write the proportion equation
   128,996.25 : 303,531 = 303,531 : x
2. Step 2: Convert to fraction form
   128,996.25/303,531 = 303,531/x
3. Step 3: Cross multiply
   128,996.25x = 303,531 × 303,531
4. Step 4: Simplify right side
   128,996.25x = 92,131,067,961
5. Step 5: Solve for x
   x = 92,131,067,961/128,996.25
6. Step 6: Final answer
   x = 714,215.09