Finding the Third Proportional to 236,660 and 509,404

Step by Step Solution

1. Step 1: Write the proportion equation
   236,660 : 509,404 = 509,404 : x
2. Step 2: Convert to fraction form
   236,660/509,404 = 509,404/x
3. Step 3: Cross multiply
   236,660x = 509,404 × 509,404
4. Step 4: Simplify right side
   236,660x = 259,492,435,216
5. Step 5: Solve for x
   x = 259,492,435,216/236,660
6. Step 6: Final answer
   x = 1,096,477.80