Finding the Third Proportional to 13,216.50 and 19,459.69

Step by Step Solution

1. Step 1: Write the proportion equation
   13,216.50 : 19,459.69 = 19,459.69 : x
2. Step 2: Convert to fraction form
   13,216.50/19,459.69 = 19,459.69/x
3. Step 3: Cross multiply
   13,216.50x = 19,459.69 × 19,459.69
4. Step 4: Simplify right side
   13,216.50x = 378,679,437.60
5. Step 5: Solve for x
   x = 378,679,437.60/13,216.50
6. Step 6: Final answer
   x = 28,652.02