Finding the Third Proportional to 113,419 and 171,040

Step by Step Solution

1. Step 1: Write the proportion equation
   113,419 : 171,040 = 171,040 : x
2. Step 2: Convert to fraction form
   113,419/171,040 = 171,040/x
3. Step 3: Cross multiply
   113,419x = 171,040 × 171,040
4. Step 4: Simplify right side
   113,419x = 29,254,681,600
5. Step 5: Solve for x
   x = 29,254,681,600/113,419
6. Step 6: Final answer
   x = 257,934.58