Finding the Third Proportional to 14,515.81 and 21,213.56

Step by Step Solution

1. Step 1: Write the proportion equation
   14,515.81 : 21,213.56 = 21,213.56 : x
2. Step 2: Convert to fraction form
   14,515.81/21,213.56 = 21,213.56/x
3. Step 3: Cross multiply
   14,515.81x = 21,213.56 × 21,213.56
4. Step 4: Simplify right side
   14,515.81x = 450,015,233.94
5. Step 5: Solve for x
   x = 450,015,233.94/14,515.81
6. Step 6: Final answer
   x = 31,001.73