Finding the Third Proportional to 120,151.69 and 259,576.31

Step by Step Solution

1. Step 1: Write the proportion equation
   120,151.69 : 259,576.31 = 259,576.31 : x
2. Step 2: Convert to fraction form
   120,151.69/259,576.31 = 259,576.31/x
3. Step 3: Cross multiply
   120,151.69x = 259,576.31 × 259,576.31
4. Step 4: Simplify right side
   120,151.69x = 67,379,862,011.10
5. Step 5: Solve for x
   x = 67,379,862,011.10/120,151.69
6. Step 6: Final answer
   x = 560,789.98