Finding the Third Proportional to 4,685.63 and 10,018.13

Step by Step Solution

1. Step 1: Write the proportion equation
   4,685.63 : 10,018.13 = 10,018.13 : x
2. Step 2: Convert to fraction form
   4,685.63/10,018.13 = 10,018.13/x
3. Step 3: Cross multiply
   4,685.63x = 10,018.13 × 10,018.13
4. Step 4: Simplify right side
   4,685.63x = 100,362,828.52
5. Step 5: Solve for x
   x = 100,362,828.52/4,685.63
6. Step 6: Final answer
   x = 21,419.30