Finding the Third Proportional to 64,800.56 and 142,056.56

Step by Step Solution

1. Step 1: Write the proportion equation
   64,800.56 : 142,056.56 = 142,056.56 : x
2. Step 2: Convert to fraction form
   64,800.56/142,056.56 = 142,056.56/x
3. Step 3: Cross multiply
   64,800.56x = 142,056.56 × 142,056.56
4. Step 4: Simplify right side
   64,800.56x = 20,180,066,949.32
5. Step 5: Solve for x
   x = 20,180,066,949.32/64,800.56
6. Step 6: Final answer
   x = 311,418.08