Finding the Third Proportional to 223,144.50 and 490,570

Step by Step Solution

1. Step 1: Write the proportion equation
   223,144.50 : 490,570 = 490,570 : x
2. Step 2: Convert to fraction form
   223,144.50/490,570 = 490,570/x
3. Step 3: Cross multiply
   223,144.50x = 490,570 × 490,570
4. Step 4: Simplify right side
   223,144.50x = 240,658,924,900
5. Step 5: Solve for x
   x = 240,658,924,900/223,144.50
6. Step 6: Final answer
   x = 1,078,489.16