Finding the Third Proportional to 713,584 and 978,505

Step by Step Solution

1. Step 1: Write the proportion equation
   713,584 : 978,505 = 978,505 : x
2. Step 2: Convert to fraction form
   713,584/978,505 = 978,505/x
3. Step 3: Cross multiply
   713,584x = 978,505 × 978,505
4. Step 4: Simplify right side
   713,584x = 957,472,035,025
5. Step 5: Solve for x
   x = 957,472,035,025/713,584
6. Step 6: Final answer
   x = 1,341,779.01