Finding the Third Proportional to 260,665.50 and 571,155

Step by Step Solution

1. Step 1: Write the proportion equation
   260,665.50 : 571,155 = 571,155 : x
2. Step 2: Convert to fraction form
   260,665.50/571,155 = 571,155/x
3. Step 3: Cross multiply
   260,665.50x = 571,155 × 571,155
4. Step 4: Simplify right side
   260,665.50x = 326,218,034,025
5. Step 5: Solve for x
   x = 326,218,034,025/260,665.50
6. Step 6: Final answer
   x = 1,251,481.44