Finding the Third Proportional to 9,009.98 and 13,856.70

Step by Step Solution

1. Step 1: Write the proportion equation
   9,009.98 : 13,856.70 = 13,856.70 : x
2. Step 2: Convert to fraction form
   9,009.98/13,856.70 = 13,856.70/x
3. Step 3: Cross multiply
   9,009.98x = 13,856.70 × 13,856.70
4. Step 4: Simplify right side
   9,009.98x = 192,008,004.98
5. Step 5: Solve for x
   x = 192,008,004.98/9,009.98
6. Step 6: Final answer
   x = 21,310.58