Finding the Third Proportional to 213,636 and 332,116.50

Step by Step Solution

1. Step 1: Write the proportion equation
   213,636 : 332,116.50 = 332,116.50 : x
2. Step 2: Convert to fraction form
   213,636/332,116.50 = 332,116.50/x
3. Step 3: Cross multiply
   213,636x = 332,116.50 × 332,116.50
4. Step 4: Simplify right side
   213,636x = 110,301,369,572.25
5. Step 5: Solve for x
   x = 110,301,369,572.25/213,636
6. Step 6: Final answer
   x = 516,305.16