Finding the Third Proportional to 143,943.75 and 304,499.25

Step by Step Solution

1. Step 1: Write the proportion equation
   143,943.75 : 304,499.25 = 304,499.25 : x
2. Step 2: Convert to fraction form
   143,943.75/304,499.25 = 304,499.25/x
3. Step 3: Cross multiply
   143,943.75x = 304,499.25 × 304,499.25
4. Step 4: Simplify right side
   143,943.75x = 92,719,793,250.56
5. Step 5: Solve for x
   x = 92,719,793,250.56/143,943.75
6. Step 6: Final answer
   x = 644,139.07