Finding the Third Proportional to 66,107.50 and 142,734

Step by Step Solution

1. Step 1: Write the proportion equation
   66,107.50 : 142,734 = 142,734 : x
2. Step 2: Convert to fraction form
   66,107.50/142,734 = 142,734/x
3. Step 3: Cross multiply
   66,107.50x = 142,734 × 142,734
4. Step 4: Simplify right side
   66,107.50x = 20,372,994,756
5. Step 5: Solve for x
   x = 20,372,994,756/66,107.50
6. Step 6: Final answer
   x = 308,179.78