Finding the Third Proportional to 111,359.81 and 247,561.31

Step by Step Solution

1. Step 1: Write the proportion equation
   111,359.81 : 247,561.31 = 247,561.31 : x
2. Step 2: Convert to fraction form
   111,359.81/247,561.31 = 247,561.31/x
3. Step 3: Cross multiply
   111,359.81x = 247,561.31 × 247,561.31
4. Step 4: Simplify right side
   111,359.81x = 61,286,603,446.72
5. Step 5: Solve for x
   x = 61,286,603,446.72/111,359.81
6. Step 6: Final answer
   x = 550,347.58