Finding the Third Proportional to 713,445 and 978,306

Step by Step Solution

1. Step 1: Write the proportion equation
   713,445 : 978,306 = 978,306 : x
2. Step 2: Convert to fraction form
   713,445/978,306 = 978,306/x
3. Step 3: Cross multiply
   713,445x = 978,306 × 978,306
4. Step 4: Simplify right side
   713,445x = 957,082,629,636
5. Step 5: Solve for x
   x = 957,082,629,636/713,445
6. Step 6: Final answer
   x = 1,341,494.62