Finding the Third Proportional to 63,909 and 136,019.25

Step by Step Solution

1. Step 1: Write the proportion equation
   63,909 : 136,019.25 = 136,019.25 : x
2. Step 2: Convert to fraction form
   63,909/136,019.25 = 136,019.25/x
3. Step 3: Cross multiply
   63,909x = 136,019.25 × 136,019.25
4. Step 4: Simplify right side
   63,909x = 18,501,236,370.56
5. Step 5: Solve for x
   x = 18,501,236,370.56/63,909
6. Step 6: Final answer
   x = 289,493.44