Finding the Third Proportional to 396,076 and 851,860

Step by Step Solution

1. Step 1: Write the proportion equation
   396,076 : 851,860 = 851,860 : x
2. Step 2: Convert to fraction form
   396,076/851,860 = 851,860/x
3. Step 3: Cross multiply
   396,076x = 851,860 × 851,860
4. Step 4: Simplify right side
   396,076x = 725,665,459,600
5. Step 5: Solve for x
   x = 725,665,459,600/396,076
6. Step 6: Final answer
   x = 1,832,136.91