Finding the Third Proportional to 638,071 and 1,401,929

Step by Step Solution

1. Step 1: Write the proportion equation
   638,071 : 1,401,929 = 1,401,929 : x
2. Step 2: Convert to fraction form
   638,071/1,401,929 = 1,401,929/x
3. Step 3: Cross multiply
   638,071x = 1,401,929 × 1,401,929
4. Step 4: Simplify right side
   638,071x = 1,965,404,921,041
5. Step 5: Solve for x
   x = 1,965,404,921,041/638,071
6. Step 6: Final answer
   x = 3,080,229.19