Finding the Third Proportional to 116,879 and 248,320

Step by Step Solution

1. Step 1: Write the proportion equation
   116,879 : 248,320 = 248,320 : x
2. Step 2: Convert to fraction form
   116,879/248,320 = 248,320/x
3. Step 3: Cross multiply
   116,879x = 248,320 × 248,320
4. Step 4: Simplify right side
   116,879x = 61,662,822,400
5. Step 5: Solve for x
   x = 61,662,822,400/116,879
6. Step 6: Final answer
   x = 527,578.29