Finding the Third Proportional to 870,601.50 and 978,554.25

Step by Step Solution

1. Step 1: Write the proportion equation
   870,601.50 : 978,554.25 = 978,554.25 : x
2. Step 2: Convert to fraction form
   870,601.50/978,554.25 = 978,554.25/x
3. Step 3: Cross multiply
   870,601.50x = 978,554.25 × 978,554.25
4. Step 4: Simplify right side
   870,601.50x = 957,568,420,193.06
5. Step 5: Solve for x
   x = 957,568,420,193.06/870,601.50
6. Step 6: Final answer
   x = 1,099,892.91