Finding the Third Proportional to 333,158 and 487,243

Step by Step Solution

1. Step 1: Write the proportion equation
   333,158 : 487,243 = 487,243 : x
2. Step 2: Convert to fraction form
   333,158/487,243 = 487,243/x
3. Step 3: Cross multiply
   333,158x = 487,243 × 487,243
4. Step 4: Simplify right side
   333,158x = 237,405,741,049
5. Step 5: Solve for x
   x = 237,405,741,049/333,158
6. Step 6: Final answer
   x = 712,592.05