Finding the Third Proportional to 110,631 and 172,858.50

Step by Step Solution

1. Step 1: Write the proportion equation
   110,631 : 172,858.50 = 172,858.50 : x
2. Step 2: Convert to fraction form
   110,631/172,858.50 = 172,858.50/x
3. Step 3: Cross multiply
   110,631x = 172,858.50 × 172,858.50
4. Step 4: Simplify right side
   110,631x = 29,880,061,022.25
5. Step 5: Solve for x
   x = 29,880,061,022.25/110,631
6. Step 6: Final answer
   x = 270,087.60