Finding the Third Proportional to 45,879.75 and 69,455.25

Step by Step Solution

1. Step 1: Write the proportion equation
   45,879.75 : 69,455.25 = 69,455.25 : x
2. Step 2: Convert to fraction form
   45,879.75/69,455.25 = 69,455.25/x
3. Step 3: Cross multiply
   45,879.75x = 69,455.25 × 69,455.25
4. Step 4: Simplify right side
   45,879.75x = 4,824,031,752.56
5. Step 5: Solve for x
   x = 4,824,031,752.56/45,879.75
6. Step 6: Final answer
   x = 105,145.12