Finding the Third Proportional to 360,798 and 783,079.50

Step by Step Solution

1. Step 1: Write the proportion equation
   360,798 : 783,079.50 = 783,079.50 : x
2. Step 2: Convert to fraction form
   360,798/783,079.50 = 783,079.50/x
3. Step 3: Cross multiply
   360,798x = 783,079.50 × 783,079.50
4. Step 4: Simplify right side
   360,798x = 613,213,503,320.25
5. Step 5: Solve for x
   x = 613,213,503,320.25/360,798
6. Step 6: Final answer
   x = 1,699,603.39