Finding the Third Proportional to 402,092 and 804,144

Step by Step Solution

1. Step 1: Write the proportion equation
   402,092 : 804,144 = 804,144 : x
2. Step 2: Convert to fraction form
   402,092/804,144 = 804,144/x
3. Step 3: Cross multiply
   402,092x = 804,144 × 804,144
4. Step 4: Simplify right side
   402,092x = 646,647,572,736
5. Step 5: Solve for x
   x = 646,647,572,736/402,092
6. Step 6: Final answer
   x = 1,608,208.00