Finding the Third Proportional to 64,800 and 99,965.25

Step by Step Solution

1. Step 1: Write the proportion equation
   64,800 : 99,965.25 = 99,965.25 : x
2. Step 2: Convert to fraction form
   64,800/99,965.25 = 99,965.25/x
3. Step 3: Cross multiply
   64,800x = 99,965.25 × 99,965.25
4. Step 4: Simplify right side
   64,800x = 9,993,051,207.56
5. Step 5: Solve for x
   x = 9,993,051,207.56/64,800
6. Step 6: Final answer
   x = 154,213.75