Finding the Third Proportional to 10,423.69 and 13,959.84

Step by Step Solution

1. Step 1: Write the proportion equation
   10,423.69 : 13,959.84 = 13,959.84 : x
2. Step 2: Convert to fraction form
   10,423.69/13,959.84 = 13,959.84/x
3. Step 3: Cross multiply
   10,423.69x = 13,959.84 × 13,959.84
4. Step 4: Simplify right side
   10,423.69x = 194,877,237.52
5. Step 5: Solve for x
   x = 194,877,237.52/10,423.69
6. Step 6: Final answer
   x = 18,695.61