Finding the Third Proportional to 111,296.25 and 247,513.50

Step by Step Solution

1. Step 1: Write the proportion equation
   111,296.25 : 247,513.50 = 247,513.50 : x
2. Step 2: Convert to fraction form
   111,296.25/247,513.50 = 247,513.50/x
3. Step 3: Cross multiply
   111,296.25x = 247,513.50 × 247,513.50
4. Step 4: Simplify right side
   111,296.25x = 61,262,932,682.25
5. Step 5: Solve for x
   x = 61,262,932,682.25/111,296.25
6. Step 6: Final answer
   x = 550,449.21