Finding the Third Proportional to 281,806.50 and 664,560

Step by Step Solution

1. Step 1: Write the proportion equation
   281,806.50 : 664,560 = 664,560 : x
2. Step 2: Convert to fraction form
   281,806.50/664,560 = 664,560/x
3. Step 3: Cross multiply
   281,806.50x = 664,560 × 664,560
4. Step 4: Simplify right side
   281,806.50x = 441,639,993,600
5. Step 5: Solve for x
   x = 441,639,993,600/281,806.50
6. Step 6: Final answer
   x = 1,567,174.62