Finding the Third Proportional to 313,452 and 686,974.50

Step by Step Solution

1. Step 1: Write the proportion equation
   313,452 : 686,974.50 = 686,974.50 : x
2. Step 2: Convert to fraction form
   313,452/686,974.50 = 686,974.50/x
3. Step 3: Cross multiply
   313,452x = 686,974.50 × 686,974.50
4. Step 4: Simplify right side
   313,452x = 471,933,963,650.25
5. Step 5: Solve for x
   x = 471,933,963,650.25/313,452
6. Step 6: Final answer
   x = 1,505,602.02