Finding the Third Proportional to 10,200.09 and 14,439.09

Step by Step Solution

1. Step 1: Write the proportion equation
   10,200.09 : 14,439.09 = 14,439.09 : x
2. Step 2: Convert to fraction form
   10,200.09/14,439.09 = 14,439.09/x
3. Step 3: Cross multiply
   10,200.09x = 14,439.09 × 14,439.09
4. Step 4: Simplify right side
   10,200.09x = 208,487,428.32
5. Step 5: Solve for x
   x = 208,487,428.32/10,200.09
6. Step 6: Final answer
   x = 20,439.76