Finding the Third Proportional to 10,419.75 and 14,889.38

Step by Step Solution

1. Step 1: Write the proportion equation
   10,419.75 : 14,889.38 = 14,889.38 : x
2. Step 2: Convert to fraction form
   10,419.75/14,889.38 = 14,889.38/x
3. Step 3: Cross multiply
   10,419.75x = 14,889.38 × 14,889.38
4. Step 4: Simplify right side
   10,419.75x = 221,693,487.89
5. Step 5: Solve for x
   x = 221,693,487.89/10,419.75
6. Step 6: Final answer
   x = 21,276.28