Finding the Third Proportional to 221,490 and 474,450.75

Step by Step Solution

1. Step 1: Write the proportion equation
   221,490 : 474,450.75 = 474,450.75 : x
2. Step 2: Convert to fraction form
   221,490/474,450.75 = 474,450.75/x
3. Step 3: Cross multiply
   221,490x = 474,450.75 × 474,450.75
4. Step 4: Simplify right side
   221,490x = 225,103,514,175.56
5. Step 5: Solve for x
   x = 225,103,514,175.56/221,490
6. Step 6: Final answer
   x = 1,016,314.57