Finding the Third Proportional to 301,900 and 646,074

Step by Step Solution

1. Step 1: Write the proportion equation
   301,900 : 646,074 = 646,074 : x
2. Step 2: Convert to fraction form
   301,900/646,074 = 646,074/x
3. Step 3: Cross multiply
   301,900x = 646,074 × 646,074
4. Step 4: Simplify right side
   301,900x = 417,411,613,476
5. Step 5: Solve for x
   x = 417,411,613,476/301,900
6. Step 6: Final answer
   x = 1,382,615.48