Finding the Third Proportional to 122,636 and 173,910

Step by Step Solution

1. Step 1: Write the proportion equation
   122,636 : 173,910 = 173,910 : x
2. Step 2: Convert to fraction form
   122,636/173,910 = 173,910/x
3. Step 3: Cross multiply
   122,636x = 173,910 × 173,910
4. Step 4: Simplify right side
   122,636x = 30,244,688,100
5. Step 5: Solve for x
   x = 30,244,688,100/122,636
6. Step 6: Final answer
   x = 246,621.61