Finding the Third Proportional to 40,659.75 and 64,685.25

Step by Step Solution

1. Step 1: Write the proportion equation
   40,659.75 : 64,685.25 = 64,685.25 : x
2. Step 2: Convert to fraction form
   40,659.75/64,685.25 = 64,685.25/x
3. Step 3: Cross multiply
   40,659.75x = 64,685.25 × 64,685.25
4. Step 4: Simplify right side
   40,659.75x = 4,184,181,567.56
5. Step 5: Solve for x
   x = 4,184,181,567.56/40,659.75
6. Step 6: Final answer
   x = 102,907.21