Finding the Third Proportional to 91,162.13 and 198,910.69

Step by Step Solution

1. Step 1: Write the proportion equation
   91,162.13 : 198,910.69 = 198,910.69 : x
2. Step 2: Convert to fraction form
   91,162.13/198,910.69 = 198,910.69/x
3. Step 3: Cross multiply
   91,162.13x = 198,910.69 × 198,910.69
4. Step 4: Simplify right side
   91,162.13x = 39,565,461,601.72
5. Step 5: Solve for x
   x = 39,565,461,601.72/91,162.13
6. Step 6: Final answer
   x = 434,012.06