Finding the Third Proportional to 364,109 and 774,145

Step by Step Solution

1. Step 1: Write the proportion equation
   364,109 : 774,145 = 774,145 : x
2. Step 2: Convert to fraction form
   364,109/774,145 = 774,145/x
3. Step 3: Cross multiply
   364,109x = 774,145 × 774,145
4. Step 4: Simplify right side
   364,109x = 599,300,481,025
5. Step 5: Solve for x
   x = 599,300,481,025/364,109
6. Step 6: Final answer
   x = 1,645,937.02