Finding the Third Proportional to 118,247 and 256,150

Step by Step Solution

1. Step 1: Write the proportion equation
   118,247 : 256,150 = 256,150 : x
2. Step 2: Convert to fraction form
   118,247/256,150 = 256,150/x
3. Step 3: Cross multiply
   118,247x = 256,150 × 256,150
4. Step 4: Simplify right side
   118,247x = 65,612,822,500
5. Step 5: Solve for x
   x = 65,612,822,500/118,247
6. Step 6: Final answer
   x = 554,879.38