Finding the Third Proportional to 715,186 and 1,515,665

Step by Step Solution

1. Step 1: Write the proportion equation
   715,186 : 1,515,665 = 1,515,665 : x
2. Step 2: Convert to fraction form
   715,186/1,515,665 = 1,515,665/x
3. Step 3: Cross multiply
   715,186x = 1,515,665 × 1,515,665
4. Step 4: Simplify right side
   715,186x = 2,297,240,392,225
5. Step 5: Solve for x
   x = 2,297,240,392,225/715,186
6. Step 6: Final answer
   x = 3,212,088.03