Finding the Third Proportional to 108,719.50 and 172,961

Step by Step Solution

1. Step 1: Write the proportion equation
   108,719.50 : 172,961 = 172,961 : x
2. Step 2: Convert to fraction form
   108,719.50/172,961 = 172,961/x
3. Step 3: Cross multiply
   108,719.50x = 172,961 × 172,961
4. Step 4: Simplify right side
   108,719.50x = 29,915,507,521
5. Step 5: Solve for x
   x = 29,915,507,521/108,719.50
6. Step 6: Final answer
   x = 275,162.30