Finding the Third Proportional to 10,216.13 and 21,196.69

Step by Step Solution

1. Step 1: Write the proportion equation
   10,216.13 : 21,196.69 = 21,196.69 : x
2. Step 2: Convert to fraction form
   10,216.13/21,196.69 = 21,196.69/x
3. Step 3: Cross multiply
   10,216.13x = 21,196.69 × 21,196.69
4. Step 4: Simplify right side
   10,216.13x = 449,299,560.97
5. Step 5: Solve for x
   x = 449,299,560.97/10,216.13
6. Step 6: Final answer
   x = 43,979.45