Finding the Third Proportional to 13,153.88 and 20,122.31

Step by Step Solution

1. Step 1: Write the proportion equation
   13,153.88 : 20,122.31 = 20,122.31 : x
2. Step 2: Convert to fraction form
   13,153.88/20,122.31 = 20,122.31/x
3. Step 3: Cross multiply
   13,153.88x = 20,122.31 × 20,122.31
4. Step 4: Simplify right side
   13,153.88x = 404,907,460.35
5. Step 5: Solve for x
   x = 404,907,460.35/13,153.88
6. Step 6: Final answer
   x = 30,782.37