Finding the Third Proportional to 517,845 and 699,646.50

Step by Step Solution

1. Step 1: Write the proportion equation
   517,845 : 699,646.50 = 699,646.50 : x
2. Step 2: Convert to fraction form
   517,845/699,646.50 = 699,646.50/x
3. Step 3: Cross multiply
   517,845x = 699,646.50 × 699,646.50
4. Step 4: Simplify right side
   517,845x = 489,505,224,962.25
5. Step 5: Solve for x
   x = 489,505,224,962.25/517,845
6. Step 6: Final answer
   x = 945,273.63