Finding the Third Proportional to 33,657.75 and 68,419.50

Step by Step Solution

1. Step 1: Write the proportion equation
   33,657.75 : 68,419.50 = 68,419.50 : x
2. Step 2: Convert to fraction form
   33,657.75/68,419.50 = 68,419.50/x
3. Step 3: Cross multiply
   33,657.75x = 68,419.50 × 68,419.50
4. Step 4: Simplify right side
   33,657.75x = 4,681,227,980.25
5. Step 5: Solve for x
   x = 4,681,227,980.25/33,657.75
6. Step 6: Final answer
   x = 139,083.21