Finding the Third Proportional to 79,920 and 173,781

Step by Step Solution

1. Step 1: Write the proportion equation
   79,920 : 173,781 = 173,781 : x
2. Step 2: Convert to fraction form
   79,920/173,781 = 173,781/x
3. Step 3: Cross multiply
   79,920x = 173,781 × 173,781
4. Step 4: Simplify right side
   79,920x = 30,199,835,961
5. Step 5: Solve for x
   x = 30,199,835,961/79,920
6. Step 6: Final answer
   x = 377,875.83