Finding the Third Proportional to 4,165.31 and 8,870.06

Step by Step Solution

1. Step 1: Write the proportion equation
   4,165.31 : 8,870.06 = 8,870.06 : x
2. Step 2: Convert to fraction form
   4,165.31/8,870.06 = 8,870.06/x
3. Step 3: Cross multiply
   4,165.31x = 8,870.06 × 8,870.06
4. Step 4: Simplify right side
   4,165.31x = 78,678,008.75
5. Step 5: Solve for x
   x = 78,678,008.75/4,165.31
6. Step 6: Final answer
   x = 18,888.86