Finding the Third Proportional to 354,903.75 and 774,036

Step by Step Solution

1. Step 1: Write the proportion equation
   354,903.75 : 774,036 = 774,036 : x
2. Step 2: Convert to fraction form
   354,903.75/774,036 = 774,036/x
3. Step 3: Cross multiply
   354,903.75x = 774,036 × 774,036
4. Step 4: Simplify right side
   354,903.75x = 599,131,729,296
5. Step 5: Solve for x
   x = 599,131,729,296/354,903.75
6. Step 6: Final answer
   x = 1,688,152.72