Finding the Third Proportional to 196,676 and 431,260

Step by Step Solution

1. Step 1: Write the proportion equation
   196,676 : 431,260 = 431,260 : x
2. Step 2: Convert to fraction form
   196,676/431,260 = 431,260/x
3. Step 3: Cross multiply
   196,676x = 431,260 × 431,260
4. Step 4: Simplify right side
   196,676x = 185,985,187,600
5. Step 5: Solve for x
   x = 185,985,187,600/196,676
6. Step 6: Final answer
   x = 945,642.52