Finding the Third Proportional to 213,445 and 300,313.50

Step by Step Solution

1. Step 1: Write the proportion equation
   213,445 : 300,313.50 = 300,313.50 : x
2. Step 2: Convert to fraction form
   213,445/300,313.50 = 300,313.50/x
3. Step 3: Cross multiply
   213,445x = 300,313.50 × 300,313.50
4. Step 4: Simplify right side
   213,445x = 90,188,198,282.25
5. Step 5: Solve for x
   x = 90,188,198,282.25/213,445
6. Step 6: Final answer
   x = 422,536.01