Finding the Third Proportional to 713,431 and 978,292

Step by Step Solution

1. Step 1: Write the proportion equation
   713,431 : 978,292 = 978,292 : x
2. Step 2: Convert to fraction form
   713,431/978,292 = 978,292/x
3. Step 3: Cross multiply
   713,431x = 978,292 × 978,292
4. Step 4: Simplify right side
   713,431x = 957,055,237,264
5. Step 5: Solve for x
   x = 957,055,237,264/713,431
6. Step 6: Final answer
   x = 1,341,482.55