Finding the Third Proportional to 221,394 and 332,131.50

Step by Step Solution

1. Step 1: Write the proportion equation
   221,394 : 332,131.50 = 332,131.50 : x
2. Step 2: Convert to fraction form
   221,394/332,131.50 = 332,131.50/x
3. Step 3: Cross multiply
   221,394x = 332,131.50 × 332,131.50
4. Step 4: Simplify right side
   221,394x = 110,311,333,292.25
5. Step 5: Solve for x
   x = 110,311,333,292.25/221,394
6. Step 6: Final answer
   x = 498,258.01