Finding the Third Proportional to 9,870.38 and 12,805.88

Step by Step Solution

1. Step 1: Write the proportion equation
   9,870.38 : 12,805.88 = 12,805.88 : x
2. Step 2: Convert to fraction form
   9,870.38/12,805.88 = 12,805.88/x
3. Step 3: Cross multiply
   9,870.38x = 12,805.88 × 12,805.88
4. Step 4: Simplify right side
   9,870.38x = 163,990,434.52
5. Step 5: Solve for x
   x = 163,990,434.52/9,870.38
6. Step 6: Final answer
   x = 16,614.41