Finding the Third Proportional to 80,853.50 and 115,778.50

Step by Step Solution

1. Step 1: Write the proportion equation
   80,853.50 : 115,778.50 = 115,778.50 : x
2. Step 2: Convert to fraction form
   80,853.50/115,778.50 = 115,778.50/x
3. Step 3: Cross multiply
   80,853.50x = 115,778.50 × 115,778.50
4. Step 4: Simplify right side
   80,853.50x = 13,404,661,062.25
5. Step 5: Solve for x
   x = 13,404,661,062.25/80,853.50
6. Step 6: Final answer
   x = 165,789.50