Finding the Third Proportional to 89,765.72 and 136,513.69

Step by Step Solution

1. Step 1: Write the proportion equation
   89,765.72 : 136,513.69 = 136,513.69 : x
2. Step 2: Convert to fraction form
   89,765.72/136,513.69 = 136,513.69/x
3. Step 3: Cross multiply
   89,765.72x = 136,513.69 × 136,513.69
4. Step 4: Simplify right side
   89,765.72x = 18,635,986,874.85
5. Step 5: Solve for x
   x = 18,635,986,874.85/89,765.72
6. Step 6: Final answer
   x = 207,606.95