Finding the Third Proportional to 79,380 and 156,744

Step by Step Solution

1. Step 1: Write the proportion equation
   79,380 : 156,744 = 156,744 : x
2. Step 2: Convert to fraction form
   79,380/156,744 = 156,744/x
3. Step 3: Cross multiply
   79,380x = 156,744 × 156,744
4. Step 4: Simplify right side
   79,380x = 24,568,681,536
5. Step 5: Solve for x
   x = 24,568,681,536/79,380
6. Step 6: Final answer
   x = 309,507.20