Finding the Third Proportional to 360.75 and 619.69

Step by Step Solution

1. Step 1: Write the proportion equation
   360.75 : 619.69 = 619.69 : x
2. Step 2: Convert to fraction form
   360.75/619.69 = 619.69/x
3. Step 3: Cross multiply
   360.75x = 619.69 × 619.69
4. Step 4: Simplify right side
   360.75x = 384,012.60
5. Step 5: Solve for x
   x = 384,012.60/360.75
6. Step 6: Final answer
   x = 1,064.48