Finding the Third Proportional to 81,792 and 168,808.50

Step by Step Solution

1. Step 1: Write the proportion equation
   81,792 : 168,808.50 = 168,808.50 : x
2. Step 2: Convert to fraction form
   81,792/168,808.50 = 168,808.50/x
3. Step 3: Cross multiply
   81,792x = 168,808.50 × 168,808.50
4. Step 4: Simplify right side
   81,792x = 28,496,309,672.25
5. Step 5: Solve for x
   x = 28,496,309,672.25/81,792
6. Step 6: Final answer
   x = 348,399.72