Finding the Third Proportional to 49,218.75 and 105,439.50

Step by Step Solution

1. Step 1: Write the proportion equation
   49,218.75 : 105,439.50 = 105,439.50 : x
2. Step 2: Convert to fraction form
   49,218.75/105,439.50 = 105,439.50/x
3. Step 3: Cross multiply
   49,218.75x = 105,439.50 × 105,439.50
4. Step 4: Simplify right side
   49,218.75x = 11,117,488,160.25
5. Step 5: Solve for x
   x = 11,117,488,160.25/49,218.75
6. Step 6: Final answer
   x = 225,879.12