Finding the Third Proportional to 140,459.06 and 309,549.94

Step by Step Solution

1. Step 1: Write the proportion equation
   140,459.06 : 309,549.94 = 309,549.94 : x
2. Step 2: Convert to fraction form
   140,459.06/309,549.94 = 309,549.94/x
3. Step 3: Cross multiply
   140,459.06x = 309,549.94 × 309,549.94
4. Step 4: Simplify right side
   140,459.06x = 95,821,163,806.25
5. Step 5: Solve for x
   x = 95,821,163,806.25/140,459.06
6. Step 6: Final answer
   x = 682,199.94