Finding the Third Proportional to 299,227.50 and 649,320

Step by Step Solution

1. Step 1: Write the proportion equation
   299,227.50 : 649,320 = 649,320 : x
2. Step 2: Convert to fraction form
   299,227.50/649,320 = 649,320/x
3. Step 3: Cross multiply
   299,227.50x = 649,320 × 649,320
4. Step 4: Simplify right side
   299,227.50x = 421,616,462,400
5. Step 5: Solve for x
   x = 421,616,462,400/299,227.50
6. Step 6: Final answer
   x = 1,409,016.43