Finding the Third Proportional to 258,728.50 and 565,551

Step by Step Solution

1. Step 1: Write the proportion equation
   258,728.50 : 565,551 = 565,551 : x
2. Step 2: Convert to fraction form
   258,728.50/565,551 = 565,551/x
3. Step 3: Cross multiply
   258,728.50x = 565,551 × 565,551
4. Step 4: Simplify right side
   258,728.50x = 319,847,933,601
5. Step 5: Solve for x
   x = 319,847,933,601/258,728.50
6. Step 6: Final answer
   x = 1,236,230.00