Finding the Third Proportional to 227,308 and 356,578

Step by Step Solution

1. Step 1: Write the proportion equation
   227,308 : 356,578 = 356,578 : x
2. Step 2: Convert to fraction form
   227,308/356,578 = 356,578/x
3. Step 3: Cross multiply
   227,308x = 356,578 × 356,578
4. Step 4: Simplify right side
   227,308x = 127,147,870,084
5. Step 5: Solve for x
   x = 127,147,870,084/227,308
6. Step 6: Final answer
   x = 559,363.82