Finding the Third Proportional to 13,216.31 and 19,459.31

Step by Step Solution

1. Step 1: Write the proportion equation
   13,216.31 : 19,459.31 = 19,459.31 : x
2. Step 2: Convert to fraction form
   13,216.31/19,459.31 = 19,459.31/x
3. Step 3: Cross multiply
   13,216.31x = 19,459.31 × 19,459.31
4. Step 4: Simplify right side
   13,216.31x = 378,664,842.97
5. Step 5: Solve for x
   x = 378,664,842.97/13,216.31
6. Step 6: Final answer
   x = 28,651.32