Finding the Third Proportional to 8,412 and 13,513.50

Step by Step Solution

1. Step 1: Write the proportion equation
   8,412 : 13,513.50 = 13,513.50 : x
2. Step 2: Convert to fraction form
   8,412/13,513.50 = 13,513.50/x
3. Step 3: Cross multiply
   8,412x = 13,513.50 × 13,513.50
4. Step 4: Simplify right side
   8,412x = 182,614,682.25
5. Step 5: Solve for x
   x = 182,614,682.25/8,412
6. Step 6: Final answer
   x = 21,708.83