Finding the Third Proportional to 713,412 and 978,264

Step by Step Solution

1. Step 1: Write the proportion equation
   713,412 : 978,264 = 978,264 : x
2. Step 2: Convert to fraction form
   713,412/978,264 = 978,264/x
3. Step 3: Cross multiply
   713,412x = 978,264 × 978,264
4. Step 4: Simplify right side
   713,412x = 957,000,453,696
5. Step 5: Solve for x
   x = 957,000,453,696/713,412
6. Step 6: Final answer
   x = 1,341,441.49