Finding the Third Proportional to 91,199.50 and 136,434

Step by Step Solution

1. Step 1: Write the proportion equation
   91,199.50 : 136,434 = 136,434 : x
2. Step 2: Convert to fraction form
   91,199.50/136,434 = 136,434/x
3. Step 3: Cross multiply
   91,199.50x = 136,434 × 136,434
4. Step 4: Simplify right side
   91,199.50x = 18,614,236,356
5. Step 5: Solve for x
   x = 18,614,236,356/91,199.50
6. Step 6: Final answer
   x = 204,104.59