Finding the Third Proportional to 11,866.50 and 15,973.88

Step by Step Solution

1. Step 1: Write the proportion equation
   11,866.50 : 15,973.88 = 15,973.88 : x
2. Step 2: Convert to fraction form
   11,866.50/15,973.88 = 15,973.88/x
3. Step 3: Cross multiply
   11,866.50x = 15,973.88 × 15,973.88
4. Step 4: Simplify right side
   11,866.50x = 255,164,682.52
5. Step 5: Solve for x
   x = 255,164,682.52/11,866.50
6. Step 6: Final answer
   x = 21,502.94