Finding the Third Proportional to 515,179 and 757,870

Step by Step Solution

1. Step 1: Write the proportion equation
   515,179 : 757,870 = 757,870 : x
2. Step 2: Convert to fraction form
   515,179/757,870 = 757,870/x
3. Step 3: Cross multiply
   515,179x = 757,870 × 757,870
4. Step 4: Simplify right side
   515,179x = 574,366,936,900
5. Step 5: Solve for x
   x = 574,366,936,900/515,179
6. Step 6: Final answer
   x = 1,114,888.10