Finding the Third Proportional to 713,470 and 978,348

Step by Step Solution

1. Step 1: Write the proportion equation
   713,470 : 978,348 = 978,348 : x
2. Step 2: Convert to fraction form
   713,470/978,348 = 978,348/x
3. Step 3: Cross multiply
   713,470x = 978,348 × 978,348
4. Step 4: Simplify right side
   713,470x = 957,164,809,104
5. Step 5: Solve for x
   x = 957,164,809,104/713,470
6. Step 6: Final answer
   x = 1,341,562.80