Finding the Third Proportional to 111,218.06 and 262,225.69

Step by Step Solution

1. Step 1: Write the proportion equation
   111,218.06 : 262,225.69 = 262,225.69 : x
2. Step 2: Convert to fraction form
   111,218.06/262,225.69 = 262,225.69/x
3. Step 3: Cross multiply
   111,218.06x = 262,225.69 × 262,225.69
4. Step 4: Simplify right side
   111,218.06x = 68,762,311,184.85
5. Step 5: Solve for x
   x = 68,762,311,184.85/111,218.06
6. Step 6: Final answer
   x = 618,265.68