Finding the Third Proportional to 304,042 and 647,456

Step by Step Solution

1. Step 1: Write the proportion equation
   304,042 : 647,456 = 647,456 : x
2. Step 2: Convert to fraction form
   304,042/647,456 = 647,456/x
3. Step 3: Cross multiply
   304,042x = 647,456 × 647,456
4. Step 4: Simplify right side
   304,042x = 419,199,271,936
5. Step 5: Solve for x
   x = 419,199,271,936/304,042
6. Step 6: Final answer
   x = 1,378,754.49