Finding the Third Proportional to 111,807 and 171,604.50

Step by Step Solution

1. Step 1: Write the proportion equation
   111,807 : 171,604.50 = 171,604.50 : x
2. Step 2: Convert to fraction form
   111,807/171,604.50 = 171,604.50/x
3. Step 3: Cross multiply
   111,807x = 171,604.50 × 171,604.50
4. Step 4: Simplify right side
   111,807x = 29,448,104,420.25
5. Step 5: Solve for x
   x = 29,448,104,420.25/111,807
6. Step 6: Final answer
   x = 263,383.37