Finding the Third Proportional to 80,456 and 173,240

Step by Step Solution

1. Step 1: Write the proportion equation
   80,456 : 173,240 = 173,240 : x
2. Step 2: Convert to fraction form
   80,456/173,240 = 173,240/x
3. Step 3: Cross multiply
   80,456x = 173,240 × 173,240
4. Step 4: Simplify right side
   80,456x = 30,012,097,600
5. Step 5: Solve for x
   x = 30,012,097,600/80,456
6. Step 6: Final answer
   x = 373,024.98