Finding the Third Proportional to 90,798 and 140,919.50

Step by Step Solution

1. Step 1: Write the proportion equation
   90,798 : 140,919.50 = 140,919.50 : x
2. Step 2: Convert to fraction form
   90,798/140,919.50 = 140,919.50/x
3. Step 3: Cross multiply
   90,798x = 140,919.50 × 140,919.50
4. Step 4: Simplify right side
   90,798x = 19,858,305,480.25
5. Step 5: Solve for x
   x = 19,858,305,480.25/90,798
6. Step 6: Final answer
   x = 218,708.62