Finding the Third Proportional to 113,911.31 and 263,710.69

Step by Step Solution

1. Step 1: Write the proportion equation
   113,911.31 : 263,710.69 = 263,710.69 : x
2. Step 2: Convert to fraction form
   113,911.31/263,710.69 = 263,710.69/x
3. Step 3: Cross multiply
   113,911.31x = 263,710.69 × 263,710.69
4. Step 4: Simplify right side
   113,911.31x = 69,543,326,701.72
5. Step 5: Solve for x
   x = 69,543,326,701.72/113,911.31
6. Step 6: Final answer
   x = 610,504.13