Finding the Third Proportional to 13,559.63 and 21,570.75

Step by Step Solution

1. Step 1: Write the proportion equation
   13,559.63 : 21,570.75 = 21,570.75 : x
2. Step 2: Convert to fraction form
   13,559.63/21,570.75 = 21,570.75/x
3. Step 3: Cross multiply
   13,559.63x = 21,570.75 × 21,570.75
4. Step 4: Simplify right side
   13,559.63x = 465,297,255.56
5. Step 5: Solve for x
   x = 465,297,255.56/13,559.63
6. Step 6: Final answer
   x = 34,314.91