Finding the Third Proportional to 713,656 and 978,585

Step by Step Solution

1. Step 1: Write the proportion equation
   713,656 : 978,585 = 978,585 : x
2. Step 2: Convert to fraction form
   713,656/978,585 = 978,585/x
3. Step 3: Cross multiply
   713,656x = 978,585 × 978,585
4. Step 4: Simplify right side
   713,656x = 957,628,602,225
5. Step 5: Solve for x
   x = 957,628,602,225/713,656
6. Step 6: Final answer
   x = 1,341,863.03