Finding the Third Proportional to 1,994,121 and 4,349,142

Step by Step Solution

1. Step 1: Write the proportion equation
   1,994,121 : 4,349,142 = 4,349,142 : x
2. Step 2: Convert to fraction form
   1,994,121/4,349,142 = 4,349,142/x
3. Step 3: Cross multiply
   1,994,121x = 4,349,142 × 4,349,142
4. Step 4: Simplify right side
   1,994,121x = 18,915,036,136,164
5. Step 5: Solve for x
   x = 18,915,036,136,164/1,994,121
6. Step 6: Final answer
   x = 9,485,400.40