Finding the Third Proportional to 120,778.50 and 262,367

Step by Step Solution

1. Step 1: Write the proportion equation
   120,778.50 : 262,367 = 262,367 : x
2. Step 2: Convert to fraction form
   120,778.50/262,367 = 262,367/x
3. Step 3: Cross multiply
   120,778.50x = 262,367 × 262,367
4. Step 4: Simplify right side
   120,778.50x = 68,836,442,689
5. Step 5: Solve for x
   x = 68,836,442,689/120,778.50
6. Step 6: Final answer
   x = 569,939.54