Finding the Third Proportional to 4,630.78 and 10,139.91

Step by Step Solution

1. Step 1: Write the proportion equation
   4,630.78 : 10,139.91 = 10,139.91 : x
2. Step 2: Convert to fraction form
   4,630.78/10,139.91 = 10,139.91/x
3. Step 3: Cross multiply
   4,630.78x = 10,139.91 × 10,139.91
4. Step 4: Simplify right side
   4,630.78x = 102,817,698.76
5. Step 5: Solve for x
   x = 102,817,698.76/4,630.78
6. Step 6: Final answer
   x = 22,203.10