Finding the Third Proportional to 10,899.56 and 14,709.09

Step by Step Solution

1. Step 1: Write the proportion equation
   10,899.56 : 14,709.09 = 14,709.09 : x
2. Step 2: Convert to fraction form
   10,899.56/14,709.09 = 14,709.09/x
3. Step 3: Cross multiply
   10,899.56x = 14,709.09 × 14,709.09
4. Step 4: Simplify right side
   10,899.56x = 216,357,438.95
5. Step 5: Solve for x
   x = 216,357,438.95/10,899.56
6. Step 6: Final answer
   x = 19,850.10