Finding the Third Proportional to 91,166.50 and 196,913

Step by Step Solution

1. Step 1: Write the proportion equation
   91,166.50 : 196,913 = 196,913 : x
2. Step 2: Convert to fraction form
   91,166.50/196,913 = 196,913/x
3. Step 3: Cross multiply
   91,166.50x = 196,913 × 196,913
4. Step 4: Simplify right side
   91,166.50x = 38,774,729,569
5. Step 5: Solve for x
   x = 38,774,729,569/91,166.50
6. Step 6: Final answer
   x = 425,317.74