Finding the Third Proportional to 221,528 and 474,556

Step by Step Solution

1. Step 1: Write the proportion equation
   221,528 : 474,556 = 474,556 : x
2. Step 2: Convert to fraction form
   221,528/474,556 = 474,556/x
3. Step 3: Cross multiply
   221,528x = 474,556 × 474,556
4. Step 4: Simplify right side
   221,528x = 225,203,397,136
5. Step 5: Solve for x
   x = 225,203,397,136/221,528
6. Step 6: Final answer
   x = 1,016,591.12