Finding the Third Proportional to 42,744 and 66,355.50

Step by Step Solution

1. Step 1: Write the proportion equation
   42,744 : 66,355.50 = 66,355.50 : x
2. Step 2: Convert to fraction form
   42,744/66,355.50 = 66,355.50/x
3. Step 3: Cross multiply
   42,744x = 66,355.50 × 66,355.50
4. Step 4: Simplify right side
   42,744x = 4,403,052,380.25
5. Step 5: Solve for x
   x = 4,403,052,380.25/42,744
6. Step 6: Final answer
   x = 103,009.83