Finding the Third Proportional to 40,689 and 64,725.75

Step by Step Solution

1. Step 1: Write the proportion equation
   40,689 : 64,725.75 = 64,725.75 : x
2. Step 2: Convert to fraction form
   40,689/64,725.75 = 64,725.75/x
3. Step 3: Cross multiply
   40,689x = 64,725.75 × 64,725.75
4. Step 4: Simplify right side
   40,689x = 4,189,422,713.06
5. Step 5: Solve for x
   x = 4,189,422,713.06/40,689
6. Step 6: Final answer
   x = 102,962.05