Finding the Third Proportional to 713,464 and 978,340

Step by Step Solution

1. Step 1: Write the proportion equation
   713,464 : 978,340 = 978,340 : x
2. Step 2: Convert to fraction form
   713,464/978,340 = 978,340/x
3. Step 3: Cross multiply
   713,464x = 978,340 × 978,340
4. Step 4: Simplify right side
   713,464x = 957,149,155,600
5. Step 5: Solve for x
   x = 957,149,155,600/713,464
6. Step 6: Final answer
   x = 1,341,552.14