Finding the Third Proportional to 91,672.50 and 136,942.50

Step by Step Solution

1. Step 1: Write the proportion equation
   91,672.50 : 136,942.50 = 136,942.50 : x
2. Step 2: Convert to fraction form
   91,672.50/136,942.50 = 136,942.50/x
3. Step 3: Cross multiply
   91,672.50x = 136,942.50 × 136,942.50
4. Step 4: Simplify right side
   91,672.50x = 18,753,248,306.25
5. Step 5: Solve for x
   x = 18,753,248,306.25/91,672.50
6. Step 6: Final answer
   x = 204,567.87