Finding the Third Proportional to 309,700.50 and 682,263

Step by Step Solution

1. Step 1: Write the proportion equation
   309,700.50 : 682,263 = 682,263 : x
2. Step 2: Convert to fraction form
   309,700.50/682,263 = 682,263/x
3. Step 3: Cross multiply
   309,700.50x = 682,263 × 682,263
4. Step 4: Simplify right side
   309,700.50x = 465,482,801,169
5. Step 5: Solve for x
   x = 465,482,801,169/309,700.50
6. Step 6: Final answer
   x = 1,503,009.52