Finding the Third Proportional to 118,249.50 and 256,593

Step by Step Solution

1. Step 1: Write the proportion equation
   118,249.50 : 256,593 = 256,593 : x
2. Step 2: Convert to fraction form
   118,249.50/256,593 = 256,593/x
3. Step 3: Cross multiply
   118,249.50x = 256,593 × 256,593
4. Step 4: Simplify right side
   118,249.50x = 65,839,967,649
5. Step 5: Solve for x
   x = 65,839,967,649/118,249.50
6. Step 6: Final answer
   x = 556,788.55