Finding the Third Proportional to 12,621.38 and 19,800.38

Step by Step Solution

1. Step 1: Write the proportion equation
   12,621.38 : 19,800.38 = 19,800.38 : x
2. Step 2: Convert to fraction form
   12,621.38/19,800.38 = 19,800.38/x
3. Step 3: Cross multiply
   12,621.38x = 19,800.38 × 19,800.38
4. Step 4: Simplify right side
   12,621.38x = 392,054,850.14
5. Step 5: Solve for x
   x = 392,054,850.14/12,621.38
6. Step 6: Final answer
   x = 31,062.77