Finding the Third Proportional to 108,291 and 172,804.50

Step by Step Solution

1. Step 1: Write the proportion equation
   108,291 : 172,804.50 = 172,804.50 : x
2. Step 2: Convert to fraction form
   108,291/172,804.50 = 172,804.50/x
3. Step 3: Cross multiply
   108,291x = 172,804.50 × 172,804.50
4. Step 4: Simplify right side
   108,291x = 29,861,395,220.25
5. Step 5: Solve for x
   x = 29,861,395,220.25/108,291
6. Step 6: Final answer
   x = 275,751.40