Finding the Third Proportional to 297,720 and 580,405.50

Step by Step Solution

1. Step 1: Write the proportion equation
   297,720 : 580,405.50 = 580,405.50 : x
2. Step 2: Convert to fraction form
   297,720/580,405.50 = 580,405.50/x
3. Step 3: Cross multiply
   297,720x = 580,405.50 × 580,405.50
4. Step 4: Simplify right side
   297,720x = 336,870,544,430.25
5. Step 5: Solve for x
   x = 336,870,544,430.25/297,720
6. Step 6: Final answer
   x = 1,131,501.22