Finding the Third Proportional to 419,116 and 857,600

Step by Step Solution

1. Step 1: Write the proportion equation
   419,116 : 857,600 = 857,600 : x
2. Step 2: Convert to fraction form
   419,116/857,600 = 857,600/x
3. Step 3: Cross multiply
   419,116x = 857,600 × 857,600
4. Step 4: Simplify right side
   419,116x = 735,477,760,000
5. Step 5: Solve for x
   x = 735,477,760,000/419,116
6. Step 6: Final answer
   x = 1,754,831.03