Finding the Third Proportional to 411,287 and 560,308.50

Step by Step Solution

1. Step 1: Write the proportion equation
   411,287 : 560,308.50 = 560,308.50 : x
2. Step 2: Convert to fraction form
   411,287/560,308.50 = 560,308.50/x
3. Step 3: Cross multiply
   411,287x = 560,308.50 × 560,308.50
4. Step 4: Simplify right side
   411,287x = 313,945,615,172.25
5. Step 5: Solve for x
   x = 313,945,615,172.25/411,287
6. Step 6: Final answer
   x = 763,324.92