Finding the Third Proportional to 396,085 and 855,300

Step by Step Solution

1. Step 1: Write the proportion equation
   396,085 : 855,300 = 855,300 : x
2. Step 2: Convert to fraction form
   396,085/855,300 = 855,300/x
3. Step 3: Cross multiply
   396,085x = 855,300 × 855,300
4. Step 4: Simplify right side
   396,085x = 731,538,090,000
5. Step 5: Solve for x
   x = 731,538,090,000/396,085
6. Step 6: Final answer
   x = 1,846,921.97