Finding the Third Proportional to 140,463 and 309,556.50

Step by Step Solution

1. Step 1: Write the proportion equation
   140,463 : 309,556.50 = 309,556.50 : x
2. Step 2: Convert to fraction form
   140,463/309,556.50 = 309,556.50/x
3. Step 3: Cross multiply
   140,463x = 309,556.50 × 309,556.50
4. Step 4: Simplify right side
   140,463x = 95,825,226,692.25
5. Step 5: Solve for x
   x = 95,825,226,692.25/140,463
6. Step 6: Final answer
   x = 682,209.74