Finding the Third Proportional to 91,426 and 199,940

Step by Step Solution

1. Step 1: Write the proportion equation
   91,426 : 199,940 = 199,940 : x
2. Step 2: Convert to fraction form
   91,426/199,940 = 199,940/x
3. Step 3: Cross multiply
   91,426x = 199,940 × 199,940
4. Step 4: Simplify right side
   91,426x = 39,976,003,600
5. Step 5: Solve for x
   x = 39,976,003,600/91,426
6. Step 6: Final answer
   x = 437,249.84