Finding the Third Proportional to 172,405.50 and 379,371

Step by Step Solution

1. Step 1: Write the proportion equation
   172,405.50 : 379,371 = 379,371 : x
2. Step 2: Convert to fraction form
   172,405.50/379,371 = 379,371/x
3. Step 3: Cross multiply
   172,405.50x = 379,371 × 379,371
4. Step 4: Simplify right side
   172,405.50x = 143,922,355,641
5. Step 5: Solve for x
   x = 143,922,355,641/172,405.50
6. Step 6: Final answer
   x = 834,789.82