Finding the Third Proportional to 7,178.63 and 10,438.88

Step by Step Solution

1. Step 1: Write the proportion equation
   7,178.63 : 10,438.88 = 10,438.88 : x
2. Step 2: Convert to fraction form
   7,178.63/10,438.88 = 10,438.88/x
3. Step 3: Cross multiply
   7,178.63x = 10,438.88 × 10,438.88
4. Step 4: Simplify right side
   7,178.63x = 108,970,111.27
5. Step 5: Solve for x
   x = 108,970,111.27/7,178.63
6. Step 6: Final answer
   x = 15,179.80