Finding the Third Proportional to 108,432 and 172,503

Step by Step Solution

1. Step 1: Write the proportion equation
   108,432 : 172,503 = 172,503 : x
2. Step 2: Convert to fraction form
   108,432/172,503 = 172,503/x
3. Step 3: Cross multiply
   108,432x = 172,503 × 172,503
4. Step 4: Simplify right side
   108,432x = 29,757,285,009
5. Step 5: Solve for x
   x = 29,757,285,009/108,432
6. Step 6: Final answer
   x = 274,432.69