Finding the Third Proportional to 220,308 and 472,578

Step by Step Solution

1. Step 1: Write the proportion equation
   220,308 : 472,578 = 472,578 : x
2. Step 2: Convert to fraction form
   220,308/472,578 = 472,578/x
3. Step 3: Cross multiply
   220,308x = 472,578 × 472,578
4. Step 4: Simplify right side
   220,308x = 223,329,966,084
5. Step 5: Solve for x
   x = 223,329,966,084/220,308
6. Step 6: Final answer
   x = 1,013,717.01