Finding the Third Proportional to 91,039.50 and 198,055.50

Step by Step Solution

1. Step 1: Write the proportion equation
   91,039.50 : 198,055.50 = 198,055.50 : x
2. Step 2: Convert to fraction form
   91,039.50/198,055.50 = 198,055.50/x
3. Step 3: Cross multiply
   91,039.50x = 198,055.50 × 198,055.50
4. Step 4: Simplify right side
   91,039.50x = 39,225,981,080.25
5. Step 5: Solve for x
   x = 39,225,981,080.25/91,039.50
6. Step 6: Final answer
   x = 430,867.71