Finding the Third Proportional to 279,403.50 and 603,456

Step by Step Solution

1. Step 1: Write the proportion equation
   279,403.50 : 603,456 = 603,456 : x
2. Step 2: Convert to fraction form
   279,403.50/603,456 = 603,456/x
3. Step 3: Cross multiply
   279,403.50x = 603,456 × 603,456
4. Step 4: Simplify right side
   279,403.50x = 364,159,143,936
5. Step 5: Solve for x
   x = 364,159,143,936/279,403.50
6. Step 6: Final answer
   x = 1,303,344.96