Finding the Third Proportional to 260,356.50 and 570,648

Step by Step Solution

1. Step 1: Write the proportion equation
   260,356.50 : 570,648 = 570,648 : x
2. Step 2: Convert to fraction form
   260,356.50/570,648 = 570,648/x
3. Step 3: Cross multiply
   260,356.50x = 570,648 × 570,648
4. Step 4: Simplify right side
   260,356.50x = 325,639,139,904
5. Step 5: Solve for x
   x = 325,639,139,904/260,356.50
6. Step 6: Final answer
   x = 1,250,743.27