Finding the Third Proportional to 6,139.13 and 12,308.63

Step by Step Solution

1. Step 1: Write the proportion equation
   6,139.13 : 12,308.63 = 12,308.63 : x
2. Step 2: Convert to fraction form
   6,139.13/12,308.63 = 12,308.63/x
3. Step 3: Cross multiply
   6,139.13x = 12,308.63 × 12,308.63
4. Step 4: Simplify right side
   6,139.13x = 151,502,249.39
5. Step 5: Solve for x
   x = 151,502,249.39/6,139.13
6. Step 6: Final answer
   x = 24,678.15