Finding the Third Proportional to 3,666.38 and 8,868.38

Step by Step Solution

1. Step 1: Write the proportion equation
   3,666.38 : 8,868.38 = 8,868.38 : x
2. Step 2: Convert to fraction form
   3,666.38/8,868.38 = 8,868.38/x
3. Step 3: Cross multiply
   3,666.38x = 8,868.38 × 8,868.38
4. Step 4: Simplify right side
   3,666.38x = 78,648,075.14
5. Step 5: Solve for x
   x = 78,648,075.14/3,666.38
6. Step 6: Final answer
   x = 21,451.18