Finding the Third Proportional to 9,122.20 and 19,608.52

Step by Step Solution

1. Step 1: Write the proportion equation
   9,122.20 : 19,608.52 = 19,608.52 : x
2. Step 2: Convert to fraction form
   9,122.20/19,608.52 = 19,608.52/x
3. Step 3: Cross multiply
   9,122.20x = 19,608.52 × 19,608.52
4. Step 4: Simplify right side
   9,122.20x = 384,493,885.02
5. Step 5: Solve for x
   x = 384,493,885.02/9,122.20
6. Step 6: Final answer
   x = 42,149.24