Finding the Third Proportional to 140,288 and 303,172

Step by Step Solution

1. Step 1: Write the proportion equation
   140,288 : 303,172 = 303,172 : x
2. Step 2: Convert to fraction form
   140,288/303,172 = 303,172/x
3. Step 3: Cross multiply
   140,288x = 303,172 × 303,172
4. Step 4: Simplify right side
   140,288x = 91,913,261,584
5. Step 5: Solve for x
   x = 91,913,261,584/140,288
6. Step 6: Final answer
   x = 655,175.51