Finding the Third Proportional to 64,455 and 142,734

Step by Step Solution

1. Step 1: Write the proportion equation
   64,455 : 142,734 = 142,734 : x
2. Step 2: Convert to fraction form
   64,455/142,734 = 142,734/x
3. Step 3: Cross multiply
   64,455x = 142,734 × 142,734
4. Step 4: Simplify right side
   64,455x = 20,372,994,756
5. Step 5: Solve for x
   x = 20,372,994,756/64,455
6. Step 6: Final answer
   x = 316,080.91