Finding the Third Proportional to 713,628 and 978,543

Step by Step Solution

1. Step 1: Write the proportion equation
   713,628 : 978,543 = 978,543 : x
2. Step 2: Convert to fraction form
   713,628/978,543 = 978,543/x
3. Step 3: Cross multiply
   713,628x = 978,543 × 978,543
4. Step 4: Simplify right side
   713,628x = 957,546,402,849
5. Step 5: Solve for x
   x = 957,546,402,849/713,628
6. Step 6: Final answer
   x = 1,341,800.49