Finding the Third Proportional to 289,632 and 404,622

Step by Step Solution

1. Step 1: Write the proportion equation
   289,632 : 404,622 = 404,622 : x
2. Step 2: Convert to fraction form
   289,632/404,622 = 404,622/x
3. Step 3: Cross multiply
   289,632x = 404,622 × 404,622
4. Step 4: Simplify right side
   289,632x = 163,718,962,884
5. Step 5: Solve for x
   x = 163,718,962,884/289,632
6. Step 6: Final answer
   x = 565,265.45