Finding the Third Proportional to 91,589.50 and 196,989.50

Step by Step Solution

1. Step 1: Write the proportion equation
   91,589.50 : 196,989.50 = 196,989.50 : x
2. Step 2: Convert to fraction form
   91,589.50/196,989.50 = 196,989.50/x
3. Step 3: Cross multiply
   91,589.50x = 196,989.50 × 196,989.50
4. Step 4: Simplify right side
   91,589.50x = 38,804,863,110.25
5. Step 5: Solve for x
   x = 38,804,863,110.25/91,589.50
6. Step 6: Final answer
   x = 423,682.44