Finding the Third Proportional to 140,216.25 and 304,090.50

Step by Step Solution

1. Step 1: Write the proportion equation
   140,216.25 : 304,090.50 = 304,090.50 : x
2. Step 2: Convert to fraction form
   140,216.25/304,090.50 = 304,090.50/x
3. Step 3: Cross multiply
   140,216.25x = 304,090.50 × 304,090.50
4. Step 4: Simplify right side
   140,216.25x = 92,471,032,190.25
5. Step 5: Solve for x
   x = 92,471,032,190.25/140,216.25
6. Step 6: Final answer
   x = 659,488.70