Finding the Third Proportional to 388,965 and 804,928

Step by Step Solution

1. Step 1: Write the proportion equation
   388,965 : 804,928 = 804,928 : x
2. Step 2: Convert to fraction form
   388,965/804,928 = 804,928/x
3. Step 3: Cross multiply
   388,965x = 804,928 × 804,928
4. Step 4: Simplify right side
   388,965x = 647,909,085,184
5. Step 5: Solve for x
   x = 647,909,085,184/388,965
6. Step 6: Final answer
   x = 1,665,725.93