Finding the Third Proportional to 3,875.63 and 8,472.38

Step by Step Solution

1. Step 1: Write the proportion equation
   3,875.63 : 8,472.38 = 8,472.38 : x
2. Step 2: Convert to fraction form
   3,875.63/8,472.38 = 8,472.38/x
3. Step 3: Cross multiply
   3,875.63x = 8,472.38 × 8,472.38
4. Step 4: Simplify right side
   3,875.63x = 71,781,138.14
5. Step 5: Solve for x
   x = 71,781,138.14/3,875.63
6. Step 6: Final answer
   x = 18,521.18