Finding the Third Proportional to 297,724 and 404,288

Step by Step Solution

1. Step 1: Write the proportion equation
   297,724 : 404,288 = 404,288 : x
2. Step 2: Convert to fraction form
   297,724/404,288 = 404,288/x
3. Step 3: Cross multiply
   297,724x = 404,288 × 404,288
4. Step 4: Simplify right side
   297,724x = 163,448,786,944
5. Step 5: Solve for x
   x = 163,448,786,944/297,724
6. Step 6: Final answer
   x = 548,994.33