Finding the Third Proportional to 173,280 and 379,648

Step by Step Solution

1. Step 1: Write the proportion equation
   173,280 : 379,648 = 379,648 : x
2. Step 2: Convert to fraction form
   173,280/379,648 = 379,648/x
3. Step 3: Cross multiply
   173,280x = 379,648 × 379,648
4. Step 4: Simplify right side
   173,280x = 144,132,603,904
5. Step 5: Solve for x
   x = 144,132,603,904/173,280
6. Step 6: Final answer
   x = 831,790.19