Finding the Third Proportional to 213,510 and 494,222

Step by Step Solution

1. Step 1: Write the proportion equation
   213,510 : 494,222 = 494,222 : x
2. Step 2: Convert to fraction form
   213,510/494,222 = 494,222/x
3. Step 3: Cross multiply
   213,510x = 494,222 × 494,222
4. Step 4: Simplify right side
   213,510x = 244,255,385,284
5. Step 5: Solve for x
   x = 244,255,385,284/213,510
6. Step 6: Final answer
   x = 1,143,999.74