Finding the Third Proportional to 360,780.50 and 783,040.50

Step by Step Solution

1. Step 1: Write the proportion equation
   360,780.50 : 783,040.50 = 783,040.50 : x
2. Step 2: Convert to fraction form
   360,780.50/783,040.50 = 783,040.50/x
3. Step 3: Cross multiply
   360,780.50x = 783,040.50 × 783,040.50
4. Step 4: Simplify right side
   360,780.50x = 613,152,424,640.25
5. Step 5: Solve for x
   x = 613,152,424,640.25/360,780.50
6. Step 6: Final answer
   x = 1,699,516.53