Finding the Third Proportional to 50,739.75 and 78,563.25

Step by Step Solution

1. Step 1: Write the proportion equation
   50,739.75 : 78,563.25 = 78,563.25 : x
2. Step 2: Convert to fraction form
   50,739.75/78,563.25 = 78,563.25/x
3. Step 3: Cross multiply
   50,739.75x = 78,563.25 × 78,563.25
4. Step 4: Simplify right side
   50,739.75x = 6,172,184,250.56
5. Step 5: Solve for x
   x = 6,172,184,250.56/50,739.75
6. Step 6: Final answer
   x = 121,643.96