Finding the Third Proportional to 15,696.50 and 21,998.75

Step by Step Solution

1. Step 1: Write the proportion equation
   15,696.50 : 21,998.75 = 21,998.75 : x
2. Step 2: Convert to fraction form
   15,696.50/21,998.75 = 21,998.75/x
3. Step 3: Cross multiply
   15,696.50x = 21,998.75 × 21,998.75
4. Step 4: Simplify right side
   15,696.50x = 483,945,001.56
5. Step 5: Solve for x
   x = 483,945,001.56/15,696.50
6. Step 6: Final answer
   x = 30,831.40