Finding the Third Proportional to 90,139.50 and 195,081

Step by Step Solution

1. Step 1: Write the proportion equation
   90,139.50 : 195,081 = 195,081 : x
2. Step 2: Convert to fraction form
   90,139.50/195,081 = 195,081/x
3. Step 3: Cross multiply
   90,139.50x = 195,081 × 195,081
4. Step 4: Simplify right side
   90,139.50x = 38,056,596,561
5. Step 5: Solve for x
   x = 38,056,596,561/90,139.50
6. Step 6: Final answer
   x = 422,196.67