Finding the Third Proportional to 15,293.81 and 21,649.78

Step by Step Solution

1. Step 1: Write the proportion equation
   15,293.81 : 21,649.78 = 21,649.78 : x
2. Step 2: Convert to fraction form
   15,293.81/21,649.78 = 21,649.78/x
3. Step 3: Cross multiply
   15,293.81x = 21,649.78 × 21,649.78
4. Step 4: Simplify right side
   15,293.81x = 468,713,028.17
5. Step 5: Solve for x
   x = 468,713,028.17/15,293.81
6. Step 6: Final answer
   x = 30,647.23