Finding the Third Proportional to 189,930 and 443,720

Step by Step Solution

1. Step 1: Write the proportion equation
   189,930 : 443,720 = 443,720 : x
2. Step 2: Convert to fraction form
   189,930/443,720 = 443,720/x
3. Step 3: Cross multiply
   189,930x = 443,720 × 443,720
4. Step 4: Simplify right side
   189,930x = 196,887,438,400
5. Step 5: Solve for x
   x = 196,887,438,400/189,930
6. Step 6: Final answer
   x = 1,036,631.59