Finding the Third Proportional to 354,718.50 and 726,012

Step by Step Solution

1. Step 1: Write the proportion equation
   354,718.50 : 726,012 = 726,012 : x
2. Step 2: Convert to fraction form
   354,718.50/726,012 = 726,012/x
3. Step 3: Cross multiply
   354,718.50x = 726,012 × 726,012
4. Step 4: Simplify right side
   354,718.50x = 527,093,424,144
5. Step 5: Solve for x
   x = 527,093,424,144/354,718.50
6. Step 6: Final answer
   x = 1,485,948.50