Finding the Third Proportional to 713,863.50 and 978,900

Step by Step Solution

1. Step 1: Write the proportion equation
   713,863.50 : 978,900 = 978,900 : x
2. Step 2: Convert to fraction form
   713,863.50/978,900 = 978,900/x
3. Step 3: Cross multiply
   713,863.50x = 978,900 × 978,900
4. Step 4: Simplify right side
   713,863.50x = 958,245,210,000
5. Step 5: Solve for x
   x = 958,245,210,000/713,863.50
6. Step 6: Final answer
   x = 1,342,336.75