Finding the Third Proportional to 68,188.50 and 91,724.06

Step by Step Solution

1. Step 1: Write the proportion equation
   68,188.50 : 91,724.06 = 91,724.06 : x
2. Step 2: Convert to fraction form
   68,188.50/91,724.06 = 91,724.06/x
3. Step 3: Cross multiply
   68,188.50x = 91,724.06 × 91,724.06
4. Step 4: Simplify right side
   68,188.50x = 8,413,303,641.50
5. Step 5: Solve for x
   x = 8,413,303,641.50/68,188.50
6. Step 6: Final answer
   x = 123,383.03