Finding the Third Proportional to 13,562 and 19,720.50

Step by Step Solution

1. Step 1: Write the proportion equation
   13,562 : 19,720.50 = 19,720.50 : x
2. Step 2: Convert to fraction form
   13,562/19,720.50 = 19,720.50/x
3. Step 3: Cross multiply
   13,562x = 19,720.50 × 19,720.50
4. Step 4: Simplify right side
   13,562x = 388,898,120.25
5. Step 5: Solve for x
   x = 388,898,120.25/13,562
6. Step 6: Final answer
   x = 28,675.57