Finding the Third Proportional to 91,003.50 and 199,489.50

Step by Step Solution

1. Step 1: Write the proportion equation
   91,003.50 : 199,489.50 = 199,489.50 : x
2. Step 2: Convert to fraction form
   91,003.50/199,489.50 = 199,489.50/x
3. Step 3: Cross multiply
   91,003.50x = 199,489.50 × 199,489.50
4. Step 4: Simplify right side
   91,003.50x = 39,796,060,610.25
5. Step 5: Solve for x
   x = 39,796,060,610.25/91,003.50
6. Step 6: Final answer
   x = 437,302.53