Finding the Third Proportional to 4,667.63 and 9,871.88

Step by Step Solution

1. Step 1: Write the proportion equation
   4,667.63 : 9,871.88 = 9,871.88 : x
2. Step 2: Convert to fraction form
   4,667.63/9,871.88 = 9,871.88/x
3. Step 3: Cross multiply
   4,667.63x = 9,871.88 × 9,871.88
4. Step 4: Simplify right side
   4,667.63x = 97,453,916.02
5. Step 5: Solve for x
   x = 97,453,916.02/4,667.63
6. Step 6: Final answer
   x = 20,878.69