Finding the Third Proportional to 401,931 and 622,071

Step by Step Solution

1. Step 1: Write the proportion equation
   401,931 : 622,071 = 622,071 : x
2. Step 2: Convert to fraction form
   401,931/622,071 = 622,071/x
3. Step 3: Cross multiply
   401,931x = 622,071 × 622,071
4. Step 4: Simplify right side
   401,931x = 386,972,329,041
5. Step 5: Solve for x
   x = 386,972,329,041/401,931
6. Step 6: Final answer
   x = 962,782.99