Finding the Third Proportional to 713,676 and 978,615

Step by Step Solution

1. Step 1: Write the proportion equation
   713,676 : 978,615 = 978,615 : x
2. Step 2: Convert to fraction form
   713,676/978,615 = 978,615/x
3. Step 3: Cross multiply
   713,676x = 978,615 × 978,615
4. Step 4: Simplify right side
   713,676x = 957,687,318,225
5. Step 5: Solve for x
   x = 957,687,318,225/713,676
6. Step 6: Final answer
   x = 1,341,907.70