Finding the Third Proportional to 111,271.50 and 247,491

Step by Step Solution

1. Step 1: Write the proportion equation
   111,271.50 : 247,491 = 247,491 : x
2. Step 2: Convert to fraction form
   111,271.50/247,491 = 247,491/x
3. Step 3: Cross multiply
   111,271.50x = 247,491 × 247,491
4. Step 4: Simplify right side
   111,271.50x = 61,251,795,081
5. Step 5: Solve for x
   x = 61,251,795,081/111,271.50
6. Step 6: Final answer
   x = 550,471.55