Finding the Third Proportional to 305,132.50 and 664,510

Step by Step Solution

1. Step 1: Write the proportion equation
   305,132.50 : 664,510 = 664,510 : x
2. Step 2: Convert to fraction form
   305,132.50/664,510 = 664,510/x
3. Step 3: Cross multiply
   305,132.50x = 664,510 × 664,510
4. Step 4: Simplify right side
   305,132.50x = 441,573,540,100
5. Step 5: Solve for x
   x = 441,573,540,100/305,132.50
6. Step 6: Final answer
   x = 1,447,153.42