Finding the Third Proportional to 116,478 and 248,208

Step by Step Solution

1. Step 1: Write the proportion equation
   116,478 : 248,208 = 248,208 : x
2. Step 2: Convert to fraction form
   116,478/248,208 = 248,208/x
3. Step 3: Cross multiply
   116,478x = 248,208 × 248,208
4. Step 4: Simplify right side
   116,478x = 61,607,211,264
5. Step 5: Solve for x
   x = 61,607,211,264/116,478
6. Step 6: Final answer
   x = 528,917.15