Finding the Third Proportional to 713,426 and 978,285

Step by Step Solution

1. Step 1: Write the proportion equation
   713,426 : 978,285 = 978,285 : x
2. Step 2: Convert to fraction form
   713,426/978,285 = 978,285/x
3. Step 3: Cross multiply
   713,426x = 978,285 × 978,285
4. Step 4: Simplify right side
   713,426x = 957,041,541,225
5. Step 5: Solve for x
   x = 957,041,541,225/713,426
6. Step 6: Final answer
   x = 1,341,472.75