Finding the Third Proportional to 713,506 and 978,402

Step by Step Solution

1. Step 1: Write the proportion equation
   713,506 : 978,402 = 978,402 : x
2. Step 2: Convert to fraction form
   713,506/978,402 = 978,402/x
3. Step 3: Cross multiply
   713,506x = 978,402 × 978,402
4. Step 4: Simplify right side
   713,506x = 957,270,473,604
5. Step 5: Solve for x
   x = 957,270,473,604/713,506
6. Step 6: Final answer
   x = 1,341,643.20