Finding the Third Proportional to 109,217 and 173,661

Step by Step Solution

1. Step 1: Write the proportion equation
   109,217 : 173,661 = 173,661 : x
2. Step 2: Convert to fraction form
   109,217/173,661 = 173,661/x
3. Step 3: Cross multiply
   109,217x = 173,661 × 173,661
4. Step 4: Simplify right side
   109,217x = 30,158,142,921
5. Step 5: Solve for x
   x = 30,158,142,921/109,217
6. Step 6: Final answer
   x = 276,130.48