Finding the Third Proportional to 65,994 and 89,660.75

Step by Step Solution

1. Step 1: Write the proportion equation
   65,994 : 89,660.75 = 89,660.75 : x
2. Step 2: Convert to fraction form
   65,994/89,660.75 = 89,660.75/x
3. Step 3: Cross multiply
   65,994x = 89,660.75 × 89,660.75
4. Step 4: Simplify right side
   65,994x = 8,039,050,090.56
5. Step 5: Solve for x
   x = 8,039,050,090.56/65,994
6. Step 6: Final answer
   x = 121,814.86