Finding the Third Proportional to 713,449 and 978,319

Step by Step Solution

1. Step 1: Write the proportion equation
   713,449 : 978,319 = 978,319 : x
2. Step 2: Convert to fraction form
   713,449/978,319 = 978,319/x
3. Step 3: Cross multiply
   713,449x = 978,319 × 978,319
4. Step 4: Simplify right side
   713,449x = 957,108,065,761
5. Step 5: Solve for x
   x = 957,108,065,761/713,449
6. Step 6: Final answer
   x = 1,341,522.75