Finding the Third Proportional to 116,487 and 248,238

Step by Step Solution

1. Step 1: Write the proportion equation
   116,487 : 248,238 = 248,238 : x
2. Step 2: Convert to fraction form
   116,487/248,238 = 248,238/x
3. Step 3: Cross multiply
   116,487x = 248,238 × 248,238
4. Step 4: Simplify right side
   116,487x = 61,622,104,644
5. Step 5: Solve for x
   x = 61,622,104,644/116,487
6. Step 6: Final answer
   x = 529,004.13