Finding the Third Proportional to 311,130 and 469,559.25

Step by Step Solution

1. Step 1: Write the proportion equation
   311,130 : 469,559.25 = 469,559.25 : x
2. Step 2: Convert to fraction form
   311,130/469,559.25 = 469,559.25/x
3. Step 3: Cross multiply
   311,130x = 469,559.25 × 469,559.25
4. Step 4: Simplify right side
   311,130x = 220,485,889,260.56
5. Step 5: Solve for x
   x = 220,485,889,260.56/311,130
6. Step 6: Final answer
   x = 708,661.62