Finding the Third Proportional to 15,091.50 and 19,719

Step by Step Solution

1. Step 1: Write the proportion equation
   15,091.50 : 19,719 = 19,719 : x
2. Step 2: Convert to fraction form
   15,091.50/19,719 = 19,719/x
3. Step 3: Cross multiply
   15,091.50x = 19,719 × 19,719
4. Step 4: Simplify right side
   15,091.50x = 388,838,961
5. Step 5: Solve for x
   x = 388,838,961/15,091.50
6. Step 6: Final answer
   x = 25,765.43