Finding the Third Proportional to 713,694 and 978,642

Step by Step Solution

1. Step 1: Write the proportion equation
   713,694 : 978,642 = 978,642 : x
2. Step 2: Convert to fraction form
   713,694/978,642 = 978,642/x
3. Step 3: Cross multiply
   713,694x = 978,642 × 978,642
4. Step 4: Simplify right side
   713,694x = 957,740,164,164
5. Step 5: Solve for x
   x = 957,740,164,164/713,694
6. Step 6: Final answer
   x = 1,341,947.90