Finding the Third Proportional to 90,171 and 193,920

Step by Step Solution

1. Step 1: Write the proportion equation
   90,171 : 193,920 = 193,920 : x
2. Step 2: Convert to fraction form
   90,171/193,920 = 193,920/x
3. Step 3: Cross multiply
   90,171x = 193,920 × 193,920
4. Step 4: Simplify right side
   90,171x = 37,604,966,400
5. Step 5: Solve for x
   x = 37,604,966,400/90,171
6. Step 6: Final answer
   x = 417,040.58