Finding the Third Proportional to 336,685.50 and 726,784.50

Step by Step Solution

1. Step 1: Write the proportion equation
   336,685.50 : 726,784.50 = 726,784.50 : x
2. Step 2: Convert to fraction form
   336,685.50/726,784.50 = 726,784.50/x
3. Step 3: Cross multiply
   336,685.50x = 726,784.50 × 726,784.50
4. Step 4: Simplify right side
   336,685.50x = 528,215,709,440.25
5. Step 5: Solve for x
   x = 528,215,709,440.25/336,685.50
6. Step 6: Final answer
   x = 1,568,869.79