Finding the Third Proportional to 13,640.91 and 21,038.48

Step by Step Solution

1. Step 1: Write the proportion equation
   13,640.91 : 21,038.48 = 21,038.48 : x
2. Step 2: Convert to fraction form
   13,640.91/21,038.48 = 21,038.48/x
3. Step 3: Cross multiply
   13,640.91x = 21,038.48 × 21,038.48
4. Step 4: Simplify right side
   13,640.91x = 442,617,824.80
5. Step 5: Solve for x
   x = 442,617,824.80/13,640.91
6. Step 6: Final answer
   x = 32,447.83