Finding the Third Proportional to 18,031.25 and 39,103.75

Step by Step Solution

1. Step 1: Write the proportion equation
   18,031.25 : 39,103.75 = 39,103.75 : x
2. Step 2: Convert to fraction form
   18,031.25/39,103.75 = 39,103.75/x
3. Step 3: Cross multiply
   18,031.25x = 39,103.75 × 39,103.75
4. Step 4: Simplify right side
   18,031.25x = 1,529,103,264.06
5. Step 5: Solve for x
   x = 1,529,103,264.06/18,031.25
6. Step 6: Final answer
   x = 84,802.95