Finding the Third Proportional to 1,421,766 and 3,131,712

Step by Step Solution

1. Step 1: Write the proportion equation
   1,421,766 : 3,131,712 = 3,131,712 : x
2. Step 2: Convert to fraction form
   1,421,766/3,131,712 = 3,131,712/x
3. Step 3: Cross multiply
   1,421,766x = 3,131,712 × 3,131,712
4. Step 4: Simplify right side
   1,421,766x = 9,807,620,050,944
5. Step 5: Solve for x
   x = 9,807,620,050,944/1,421,766
6. Step 6: Final answer
   x = 6,898,195.66