Finding the Third Proportional to 140,419.50 and 304,648.50

Step by Step Solution

1. Step 1: Write the proportion equation
   140,419.50 : 304,648.50 = 304,648.50 : x
2. Step 2: Convert to fraction form
   140,419.50/304,648.50 = 304,648.50/x
3. Step 3: Cross multiply
   140,419.50x = 304,648.50 × 304,648.50
4. Step 4: Simplify right side
   140,419.50x = 92,810,708,552.25
5. Step 5: Solve for x
   x = 92,810,708,552.25/140,419.50
6. Step 6: Final answer
   x = 660,953.13