Finding the Third Proportional to 515,166 and 757,324.50

Step by Step Solution

1. Step 1: Write the proportion equation
   515,166 : 757,324.50 = 757,324.50 : x
2. Step 2: Convert to fraction form
   515,166/757,324.50 = 757,324.50/x
3. Step 3: Cross multiply
   515,166x = 757,324.50 × 757,324.50
4. Step 4: Simplify right side
   515,166x = 573,540,398,300.25
5. Step 5: Solve for x
   x = 573,540,398,300.25/515,166
6. Step 6: Final answer
   x = 1,113,311.82