Finding the Third Proportional to 388,981 and 804,960

Step by Step Solution

1. Step 1: Write the proportion equation
   388,981 : 804,960 = 804,960 : x
2. Step 2: Convert to fraction form
   388,981/804,960 = 804,960/x
3. Step 3: Cross multiply
   388,981x = 804,960 × 804,960
4. Step 4: Simplify right side
   388,981x = 647,960,601,600
5. Step 5: Solve for x
   x = 647,960,601,600/388,981
6. Step 6: Final answer
   x = 1,665,789.85