Finding the Third Proportional to 116,378 and 248,308

Step by Step Solution

1. Step 1: Write the proportion equation
   116,378 : 248,308 = 248,308 : x
2. Step 2: Convert to fraction form
   116,378/248,308 = 248,308/x
3. Step 3: Cross multiply
   116,378x = 248,308 × 248,308
4. Step 4: Simplify right side
   116,378x = 61,656,862,864
5. Step 5: Solve for x
   x = 61,656,862,864/116,378
6. Step 6: Final answer
   x = 529,798.27