Finding the Third Proportional to 10,415.25 and 21,296.25

Step by Step Solution

1. Step 1: Write the proportion equation
   10,415.25 : 21,296.25 = 21,296.25 : x
2. Step 2: Convert to fraction form
   10,415.25/21,296.25 = 21,296.25/x
3. Step 3: Cross multiply
   10,415.25x = 21,296.25 × 21,296.25
4. Step 4: Simplify right side
   10,415.25x = 453,530,264.06
5. Step 5: Solve for x
   x = 453,530,264.06/10,415.25
6. Step 6: Final answer
   x = 43,544.83