Finding the Third Proportional to 3,861.42 and 7,889.43

Step by Step Solution

1. Step 1: Write the proportion equation
   3,861.42 : 7,889.43 = 7,889.43 : x
2. Step 2: Convert to fraction form
   3,861.42/7,889.43 = 7,889.43/x
3. Step 3: Cross multiply
   3,861.42x = 7,889.43 × 7,889.43
4. Step 4: Simplify right side
   3,861.42x = 62,243,131.61
5. Step 5: Solve for x
   x = 62,243,131.61/3,861.42
6. Step 6: Final answer
   x = 16,119.23