Finding the Third Proportional to 400,710 and 624,042

Step by Step Solution

1. Step 1: Write the proportion equation
   400,710 : 624,042 = 624,042 : x
2. Step 2: Convert to fraction form
   400,710/624,042 = 624,042/x
3. Step 3: Cross multiply
   400,710x = 624,042 × 624,042
4. Step 4: Simplify right side
   400,710x = 389,428,417,764
5. Step 5: Solve for x
   x = 389,428,417,764/400,710
6. Step 6: Final answer
   x = 971,846.02