Finding the Third Proportional to 12,200.63 and 21,859.88

Step by Step Solution

1. Step 1: Write the proportion equation
   12,200.63 : 21,859.88 = 21,859.88 : x
2. Step 2: Convert to fraction form
   12,200.63/21,859.88 = 21,859.88/x
3. Step 3: Cross multiply
   12,200.63x = 21,859.88 × 21,859.88
4. Step 4: Simplify right side
   12,200.63x = 477,854,135.02
5. Step 5: Solve for x
   x = 477,854,135.02/12,200.63
6. Step 6: Final answer
   x = 39,166.37