Finding the Third Proportional to 14,187.66 and 20,870.16

Step by Step Solution

1. Step 1: Write the proportion equation
   14,187.66 : 20,870.16 = 20,870.16 : x
2. Step 2: Convert to fraction form
   14,187.66/20,870.16 = 20,870.16/x
3. Step 3: Cross multiply
   14,187.66x = 20,870.16 × 20,870.16
4. Step 4: Simplify right side
   14,187.66x = 435,563,421.90
5. Step 5: Solve for x
   x = 435,563,421.90/14,187.66
6. Step 6: Final answer
   x = 30,700.17