Finding the Third Proportional to 136,339.88 and 279,291.38

Step by Step Solution

1. Step 1: Write the proportion equation
   136,339.88 : 279,291.38 = 279,291.38 : x
2. Step 2: Convert to fraction form
   136,339.88/279,291.38 = 279,291.38/x
3. Step 3: Cross multiply
   136,339.88x = 279,291.38 × 279,291.38
4. Step 4: Simplify right side
   136,339.88x = 78,003,672,149.39
5. Step 5: Solve for x
   x = 78,003,672,149.39/136,339.88
6. Step 6: Final answer
   x = 572,126.62