Finding the Third Proportional to 439,072 and 662,066

Step by Step Solution

1. Step 1: Write the proportion equation
   439,072 : 662,066 = 662,066 : x
2. Step 2: Convert to fraction form
   439,072/662,066 = 662,066/x
3. Step 3: Cross multiply
   439,072x = 662,066 × 662,066
4. Step 4: Simplify right side
   439,072x = 438,331,388,356
5. Step 5: Solve for x
   x = 438,331,388,356/439,072
6. Step 6: Final answer
   x = 998,313.23