Finding the Third Proportional to 65,522.11 and 89,661.66

Step by Step Solution

1. Step 1: Write the proportion equation
   65,522.11 : 89,661.66 = 89,661.66 : x
2. Step 2: Convert to fraction form
   65,522.11/89,661.66 = 89,661.66/x
3. Step 3: Cross multiply
   65,522.11x = 89,661.66 × 89,661.66
4. Step 4: Simplify right side
   65,522.11x = 8,039,212,601.49
5. Step 5: Solve for x
   x = 8,039,212,601.49/65,522.11
6. Step 6: Final answer
   x = 122,694.65