Finding the Third Proportional to 13,645.75 and 21,698.94

Step by Step Solution

1. Step 1: Write the proportion equation
   13,645.75 : 21,698.94 = 21,698.94 : x
2. Step 2: Convert to fraction form
   13,645.75/21,698.94 = 21,698.94/x
3. Step 3: Cross multiply
   13,645.75x = 21,698.94 × 21,698.94
4. Step 4: Simplify right side
   13,645.75x = 470,843,888.63
5. Step 5: Solve for x
   x = 470,843,888.63/13,645.75
6. Step 6: Final answer
   x = 34,504.80