Finding the Third Proportional to 311,268.50 and 469,760

Step by Step Solution

1. Step 1: Write the proportion equation
   311,268.50 : 469,760 = 469,760 : x
2. Step 2: Convert to fraction form
   311,268.50/469,760 = 469,760/x
3. Step 3: Cross multiply
   311,268.50x = 469,760 × 469,760
4. Step 4: Simplify right side
   311,268.50x = 220,674,457,600
5. Step 5: Solve for x
   x = 220,674,457,600/311,268.50
6. Step 6: Final answer
   x = 708,952.10