Finding the Third Proportional to 515,956.50 and 743,166

Step by Step Solution

1. Step 1: Write the proportion equation
   515,956.50 : 743,166 = 743,166 : x
2. Step 2: Convert to fraction form
   515,956.50/743,166 = 743,166/x
3. Step 3: Cross multiply
   515,956.50x = 743,166 × 743,166
4. Step 4: Simplify right side
   515,956.50x = 552,295,703,556
5. Step 5: Solve for x
   x = 552,295,703,556/515,956.50
6. Step 6: Final answer
   x = 1,070,430.75