Finding the Third Proportional to 68,789.50 and 91,727.75

Step by Step Solution

1. Step 1: Write the proportion equation
   68,789.50 : 91,727.75 = 91,727.75 : x
2. Step 2: Convert to fraction form
   68,789.50/91,727.75 = 91,727.75/x
3. Step 3: Cross multiply
   68,789.50x = 91,727.75 × 91,727.75
4. Step 4: Simplify right side
   68,789.50x = 8,413,980,120.06
5. Step 5: Solve for x
   x = 8,413,980,120.06/68,789.50
6. Step 6: Final answer
   x = 122,314.89