Finding the Third Proportional to 336,717 and 722,722.50

Step by Step Solution

1. Step 1: Write the proportion equation
   336,717 : 722,722.50 = 722,722.50 : x
2. Step 2: Convert to fraction form
   336,717/722,722.50 = 722,722.50/x
3. Step 3: Cross multiply
   336,717x = 722,722.50 × 722,722.50
4. Step 4: Simplify right side
   336,717x = 522,327,812,006.25
5. Step 5: Solve for x
   x = 522,327,812,006.25/336,717
6. Step 6: Final answer
   x = 1,551,236.83