Finding the Third Proportional to 13,658 and 20,851.50

Step by Step Solution

1. Step 1: Write the proportion equation
   13,658 : 20,851.50 = 20,851.50 : x
2. Step 2: Convert to fraction form
   13,658/20,851.50 = 20,851.50/x
3. Step 3: Cross multiply
   13,658x = 20,851.50 × 20,851.50
4. Step 4: Simplify right side
   13,658x = 434,785,052.25
5. Step 5: Solve for x
   x = 434,785,052.25/13,658
6. Step 6: Final answer
   x = 31,833.73