Finding the Third Proportional to 12,622.50 and 16,434.56

Step by Step Solution

1. Step 1: Write the proportion equation
   12,622.50 : 16,434.56 = 16,434.56 : x
2. Step 2: Convert to fraction form
   12,622.50/16,434.56 = 16,434.56/x
3. Step 3: Cross multiply
   12,622.50x = 16,434.56 × 16,434.56
4. Step 4: Simplify right side
   12,622.50x = 270,094,844.57
5. Step 5: Solve for x
   x = 270,094,844.57/12,622.50
6. Step 6: Final answer
   x = 21,397.89