Finding the Third Proportional to 13,385.25 and 19,688.06

Step by Step Solution

1. Step 1: Write the proportion equation
   13,385.25 : 19,688.06 = 19,688.06 : x
2. Step 2: Convert to fraction form
   13,385.25/19,688.06 = 19,688.06/x
3. Step 3: Cross multiply
   13,385.25x = 19,688.06 × 19,688.06
4. Step 4: Simplify right side
   13,385.25x = 387,619,805.00
5. Step 5: Solve for x
   x = 387,619,805.00/13,385.25
6. Step 6: Final answer
   x = 28,958.73