Finding the Third Proportional to 168,019.50 and 266,180

Step by Step Solution

1. Step 1: Write the proportion equation
   168,019.50 : 266,180 = 266,180 : x
2. Step 2: Convert to fraction form
   168,019.50/266,180 = 266,180/x
3. Step 3: Cross multiply
   168,019.50x = 266,180 × 266,180
4. Step 4: Simplify right side
   168,019.50x = 70,851,792,400
5. Step 5: Solve for x
   x = 70,851,792,400/168,019.50
6. Step 6: Final answer
   x = 421,687.91