Finding the Third Proportional to 713,487 and 978,370

Step by Step Solution

1. Step 1: Write the proportion equation
   713,487 : 978,370 = 978,370 : x
2. Step 2: Convert to fraction form
   713,487/978,370 = 978,370/x
3. Step 3: Cross multiply
   713,487x = 978,370 × 978,370
4. Step 4: Simplify right side
   713,487x = 957,207,856,900
5. Step 5: Solve for x
   x = 957,207,856,900/713,487
6. Step 6: Final answer
   x = 1,341,591.17