Finding the Third Proportional to 91,303 and 199,215.50

Step by Step Solution

1. Step 1: Write the proportion equation
   91,303 : 199,215.50 = 199,215.50 : x
2. Step 2: Convert to fraction form
   91,303/199,215.50 = 199,215.50/x
3. Step 3: Cross multiply
   91,303x = 199,215.50 × 199,215.50
4. Step 4: Simplify right side
   91,303x = 39,686,815,440.25
5. Step 5: Solve for x
   x = 39,686,815,440.25/91,303
6. Step 6: Final answer
   x = 434,671.54