Finding the Third Proportional to 172,305 and 252,456.75

Step by Step Solution

1. Step 1: Write the proportion equation
   172,305 : 252,456.75 = 252,456.75 : x
2. Step 2: Convert to fraction form
   172,305/252,456.75 = 252,456.75/x
3. Step 3: Cross multiply
   172,305x = 252,456.75 × 252,456.75
4. Step 4: Simplify right side
   172,305x = 63,734,410,620.56
5. Step 5: Solve for x
   x = 63,734,410,620.56/172,305
6. Step 6: Final answer
   x = 369,892.98