Finding the Third Proportional to 12,556.50 and 21,386.25

Step by Step Solution

1. Step 1: Write the proportion equation
   12,556.50 : 21,386.25 = 21,386.25 : x
2. Step 2: Convert to fraction form
   12,556.50/21,386.25 = 21,386.25/x
3. Step 3: Cross multiply
   12,556.50x = 21,386.25 × 21,386.25
4. Step 4: Simplify right side
   12,556.50x = 457,371,689.06
5. Step 5: Solve for x
   x = 457,371,689.06/12,556.50
6. Step 6: Final answer
   x = 36,425.09