Finding the Third Proportional to 79,418 and 171,916

Step by Step Solution

1. Step 1: Write the proportion equation
   79,418 : 171,916 = 171,916 : x
2. Step 2: Convert to fraction form
   79,418/171,916 = 171,916/x
3. Step 3: Cross multiply
   79,418x = 171,916 × 171,916
4. Step 4: Simplify right side
   79,418x = 29,555,111,056
5. Step 5: Solve for x
   x = 29,555,111,056/79,418
6. Step 6: Final answer
   x = 372,146.25