Finding the Third Proportional to 111,228.38 and 262,453.31

Step by Step Solution

1. Step 1: Write the proportion equation
   111,228.38 : 262,453.31 = 262,453.31 : x
2. Step 2: Convert to fraction form
   111,228.38/262,453.31 = 262,453.31/x
3. Step 3: Cross multiply
   111,228.38x = 262,453.31 × 262,453.31
4. Step 4: Simplify right side
   111,228.38x = 68,881,741,242.22
5. Step 5: Solve for x
   x = 68,881,741,242.22/111,228.38
6. Step 6: Final answer
   x = 619,282.10