Finding the Third Proportional to 13,412.50 and 20,406.75

Step by Step Solution

1. Step 1: Write the proportion equation
   13,412.50 : 20,406.75 = 20,406.75 : x
2. Step 2: Convert to fraction form
   13,412.50/20,406.75 = 20,406.75/x
3. Step 3: Cross multiply
   13,412.50x = 20,406.75 × 20,406.75
4. Step 4: Simplify right side
   13,412.50x = 416,435,445.56
5. Step 5: Solve for x
   x = 416,435,445.56/13,412.50
6. Step 6: Final answer
   x = 31,048.31