Finding the Third Proportional to 79,112 and 172,812

Step by Step Solution

1. Step 1: Write the proportion equation
   79,112 : 172,812 = 172,812 : x
2. Step 2: Convert to fraction form
   79,112/172,812 = 172,812/x
3. Step 3: Cross multiply
   79,112x = 172,812 × 172,812
4. Step 4: Simplify right side
   79,112x = 29,863,987,344
5. Step 5: Solve for x
   x = 29,863,987,344/79,112
6. Step 6: Final answer
   x = 377,489.98