Finding the Third Proportional to 117,555 and 171,403.50

Step by Step Solution

1. Step 1: Write the proportion equation
   117,555 : 171,403.50 = 171,403.50 : x
2. Step 2: Convert to fraction form
   117,555/171,403.50 = 171,403.50/x
3. Step 3: Cross multiply
   117,555x = 171,403.50 × 171,403.50
4. Step 4: Simplify right side
   117,555x = 29,379,159,812.25
5. Step 5: Solve for x
   x = 29,379,159,812.25/117,555
6. Step 6: Final answer
   x = 249,918.42