Finding the Third Proportional to 91,310.50 and 199,023.50

Step by Step Solution

1. Step 1: Write the proportion equation
   91,310.50 : 199,023.50 = 199,023.50 : x
2. Step 2: Convert to fraction form
   91,310.50/199,023.50 = 199,023.50/x
3. Step 3: Cross multiply
   91,310.50x = 199,023.50 × 199,023.50
4. Step 4: Simplify right side
   91,310.50x = 39,610,353,552.25
5. Step 5: Solve for x
   x = 39,610,353,552.25/91,310.50
6. Step 6: Final answer
   x = 433,798.45