Finding the Third Proportional to 239,900.50 and 513,020

Step by Step Solution

1. Step 1: Write the proportion equation
   239,900.50 : 513,020 = 513,020 : x
2. Step 2: Convert to fraction form
   239,900.50/513,020 = 513,020/x
3. Step 3: Cross multiply
   239,900.50x = 513,020 × 513,020
4. Step 4: Simplify right side
   239,900.50x = 263,189,520,400
5. Step 5: Solve for x
   x = 263,189,520,400/239,900.50
6. Step 6: Final answer
   x = 1,097,077.83