Finding the Third Proportional to 713,454 and 978,321

Step by Step Solution

1. Step 1: Write the proportion equation
   713,454 : 978,321 = 978,321 : x
2. Step 2: Convert to fraction form
   713,454/978,321 = 978,321/x
3. Step 3: Cross multiply
   713,454x = 978,321 × 978,321
4. Step 4: Simplify right side
   713,454x = 957,111,979,041
5. Step 5: Solve for x
   x = 957,111,979,041/713,454
6. Step 6: Final answer
   x = 1,341,518.84