Finding the Third Proportional to 305,150 and 443,874

Step by Step Solution

1. Step 1: Write the proportion equation
   305,150 : 443,874 = 443,874 : x
2. Step 2: Convert to fraction form
   305,150/443,874 = 443,874/x
3. Step 3: Cross multiply
   305,150x = 443,874 × 443,874
4. Step 4: Simplify right side
   305,150x = 197,024,127,876
5. Step 5: Solve for x
   x = 197,024,127,876/305,150
6. Step 6: Final answer
   x = 645,663.21