Finding the Third Proportional to 356,845.50 and 765,571.50

Step by Step Solution

1. Step 1: Write the proportion equation
   356,845.50 : 765,571.50 = 765,571.50 : x
2. Step 2: Convert to fraction form
   356,845.50/765,571.50 = 765,571.50/x
3. Step 3: Cross multiply
   356,845.50x = 765,571.50 × 765,571.50
4. Step 4: Simplify right side
   356,845.50x = 586,099,721,612.25
5. Step 5: Solve for x
   x = 586,099,721,612.25/356,845.50
6. Step 6: Final answer
   x = 1,642,446.72