Finding the Third Proportional to 2,021,807 and 4,397,887

Step by Step Solution

1. Step 1: Write the proportion equation
   2,021,807 : 4,397,887 = 4,397,887 : x
2. Step 2: Convert to fraction form
   2,021,807/4,397,887 = 4,397,887/x
3. Step 3: Cross multiply
   2,021,807x = 4,397,887 × 4,397,887
4. Step 4: Simplify right side
   2,021,807x = 19,341,410,064,769
5. Step 5: Solve for x
   x = 19,341,410,064,769/2,021,807
6. Step 6: Final answer
   x = 9,566,397.81