Finding the Third Proportional to 1,991,205 and 4,343,997

Step by Step Solution

1. Step 1: Write the proportion equation
   1,991,205 : 4,343,997 = 4,343,997 : x
2. Step 2: Convert to fraction form
   1,991,205/4,343,997 = 4,343,997/x
3. Step 3: Cross multiply
   1,991,205x = 4,343,997 × 4,343,997
4. Step 4: Simplify right side
   1,991,205x = 18,870,309,936,009
5. Step 5: Solve for x
   x = 18,870,309,936,009/1,991,205
6. Step 6: Final answer
   x = 9,476,829.32