Finding the Third Proportional to 258,786.50 and 565,550

Step by Step Solution

1. Step 1: Write the proportion equation
   258,786.50 : 565,550 = 565,550 : x
2. Step 2: Convert to fraction form
   258,786.50/565,550 = 565,550/x
3. Step 3: Cross multiply
   258,786.50x = 565,550 × 565,550
4. Step 4: Simplify right side
   258,786.50x = 319,846,802,500
5. Step 5: Solve for x
   x = 319,846,802,500/258,786.50
6. Step 6: Final answer
   x = 1,235,948.56