Finding the Third Proportional to 12,615.75 and 21,656.25

Step by Step Solution

1. Step 1: Write the proportion equation
   12,615.75 : 21,656.25 = 21,656.25 : x
2. Step 2: Convert to fraction form
   12,615.75/21,656.25 = 21,656.25/x
3. Step 3: Cross multiply
   12,615.75x = 21,656.25 × 21,656.25
4. Step 4: Simplify right side
   12,615.75x = 468,993,164.06
5. Step 5: Solve for x
   x = 468,993,164.06/12,615.75
6. Step 6: Final answer
   x = 37,175.21