Finding the Third Proportional to 72,196.50 and 168,682

Step by Step Solution

1. Step 1: Write the proportion equation
   72,196.50 : 168,682 = 168,682 : x
2. Step 2: Convert to fraction form
   72,196.50/168,682 = 168,682/x
3. Step 3: Cross multiply
   72,196.50x = 168,682 × 168,682
4. Step 4: Simplify right side
   72,196.50x = 28,453,617,124
5. Step 5: Solve for x
   x = 28,453,617,124/72,196.50
6. Step 6: Final answer
   x = 394,113.53