Finding the Third Proportional to 1,503,686 and 3,131,788

Step by Step Solution

1. Step 1: Write the proportion equation
   1,503,686 : 3,131,788 = 3,131,788 : x
2. Step 2: Convert to fraction form
   1,503,686/3,131,788 = 3,131,788/x
3. Step 3: Cross multiply
   1,503,686x = 3,131,788 × 3,131,788
4. Step 4: Simplify right side
   1,503,686x = 9,808,096,076,944
5. Step 5: Solve for x
   x = 9,808,096,076,944/1,503,686
6. Step 6: Final answer
   x = 6,522,702.26