Finding the Third Proportional to 356,217 and 726,961.50

Step by Step Solution

1. Step 1: Write the proportion equation
   356,217 : 726,961.50 = 726,961.50 : x
2. Step 2: Convert to fraction form
   356,217/726,961.50 = 726,961.50/x
3. Step 3: Cross multiply
   356,217x = 726,961.50 × 726,961.50
4. Step 4: Simplify right side
   356,217x = 528,473,022,482.25
5. Step 5: Solve for x
   x = 528,473,022,482.25/356,217
6. Step 6: Final answer
   x = 1,483,570.47