Finding the Third Proportional to 354,974 and 772,144

Step by Step Solution

1. Step 1: Write the proportion equation
   354,974 : 772,144 = 772,144 : x
2. Step 2: Convert to fraction form
   354,974/772,144 = 772,144/x
3. Step 3: Cross multiply
   354,974x = 772,144 × 772,144
4. Step 4: Simplify right side
   354,974x = 596,206,356,736
5. Step 5: Solve for x
   x = 596,206,356,736/354,974
6. Step 6: Final answer
   x = 1,679,577.54