Finding the Third Proportional to 415,938 and 851,550

Step by Step Solution

1. Step 1: Write the proportion equation
   415,938 : 851,550 = 851,550 : x
2. Step 2: Convert to fraction form
   415,938/851,550 = 851,550/x
3. Step 3: Cross multiply
   415,938x = 851,550 × 851,550
4. Step 4: Simplify right side
   415,938x = 725,137,402,500
5. Step 5: Solve for x
   x = 725,137,402,500/415,938
6. Step 6: Final answer
   x = 1,743,378.59