Finding the Third Proportional to 15,009.75 and 21,055.50

Step by Step Solution

1. Step 1: Write the proportion equation
   15,009.75 : 21,055.50 = 21,055.50 : x
2. Step 2: Convert to fraction form
   15,009.75/21,055.50 = 21,055.50/x
3. Step 3: Cross multiply
   15,009.75x = 21,055.50 × 21,055.50
4. Step 4: Simplify right side
   15,009.75x = 443,334,080.25
5. Step 5: Solve for x
   x = 443,334,080.25/15,009.75
6. Step 6: Final answer
   x = 29,536.41