Finding the Third Proportional to 91,408.50 and 203,820

Step by Step Solution

1. Step 1: Write the proportion equation
   91,408.50 : 203,820 = 203,820 : x
2. Step 2: Convert to fraction form
   91,408.50/203,820 = 203,820/x
3. Step 3: Cross multiply
   91,408.50x = 203,820 × 203,820
4. Step 4: Simplify right side
   91,408.50x = 41,542,592,400
5. Step 5: Solve for x
   x = 41,542,592,400/91,408.50
6. Step 6: Final answer
   x = 454,471.88