Finding the Third Proportional to 279,375.75 and 603,405

Step by Step Solution

1. Step 1: Write the proportion equation
   279,375.75 : 603,405 = 603,405 : x
2. Step 2: Convert to fraction form
   279,375.75/603,405 = 603,405/x
3. Step 3: Cross multiply
   279,375.75x = 603,405 × 603,405
4. Step 4: Simplify right side
   279,375.75x = 364,097,594,025
5. Step 5: Solve for x
   x = 364,097,594,025/279,375.75
6. Step 6: Final answer
   x = 1,303,254.11