Finding the Third Proportional to 13,307 and 20,123

Step by Step Solution

1. Step 1: Write the proportion equation
   13,307 : 20,123 = 20,123 : x
2. Step 2: Convert to fraction form
   13,307/20,123 = 20,123/x
3. Step 3: Cross multiply
   13,307x = 20,123 × 20,123
4. Step 4: Simplify right side
   13,307x = 404,935,129
5. Step 5: Solve for x
   x = 404,935,129/13,307
6. Step 6: Final answer
   x = 30,430.23