Finding the Third Proportional to 143,349.75 and 200,498.63

Step by Step Solution

1. Step 1: Write the proportion equation
   143,349.75 : 200,498.63 = 200,498.63 : x
2. Step 2: Convert to fraction form
   143,349.75/200,498.63 = 200,498.63/x
3. Step 3: Cross multiply
   143,349.75x = 200,498.63 × 200,498.63
4. Step 4: Simplify right side
   143,349.75x = 40,199,698,626.89
5. Step 5: Solve for x
   x = 40,199,698,626.89/143,349.75
6. Step 6: Final answer
   x = 280,430.89