Finding the Third Proportional to 91,456 and 199,669

Step by Step Solution

1. Step 1: Write the proportion equation
   91,456 : 199,669 = 199,669 : x
2. Step 2: Convert to fraction form
   91,456/199,669 = 199,669/x
3. Step 3: Cross multiply
   91,456x = 199,669 × 199,669
4. Step 4: Simplify right side
   91,456x = 39,867,709,561
5. Step 5: Solve for x
   x = 39,867,709,561/91,456
6. Step 6: Final answer
   x = 435,922.30