Finding the Third Proportional to 482,400 and 709,144

Step by Step Solution

1. Step 1: Write the proportion equation
   482,400 : 709,144 = 709,144 : x
2. Step 2: Convert to fraction form
   482,400/709,144 = 709,144/x
3. Step 3: Cross multiply
   482,400x = 709,144 × 709,144
4. Step 4: Simplify right side
   482,400x = 502,885,212,736
5. Step 5: Solve for x
   x = 502,885,212,736/482,400
6. Step 6: Final answer
   x = 1,042,465.20