Finding the Third Proportional to 4,919.63 and 10,393.88

Step by Step Solution

1. Step 1: Write the proportion equation
   4,919.63 : 10,393.88 = 10,393.88 : x
2. Step 2: Convert to fraction form
   4,919.63/10,393.88 = 10,393.88/x
3. Step 3: Cross multiply
   4,919.63x = 10,393.88 × 10,393.88
4. Step 4: Simplify right side
   4,919.63x = 108,032,637.52
5. Step 5: Solve for x
   x = 108,032,637.52/4,919.63
6. Step 6: Final answer
   x = 21,959.53