Finding the Third Proportional to 1,661,607 and 3,912,057

Step by Step Solution

1. Step 1: Write the proportion equation
   1,661,607 : 3,912,057 = 3,912,057 : x
2. Step 2: Convert to fraction form
   1,661,607/3,912,057 = 3,912,057/x
3. Step 3: Cross multiply
   1,661,607x = 3,912,057 × 3,912,057
4. Step 4: Simplify right side
   1,661,607x = 15,304,189,971,249
5. Step 5: Solve for x
   x = 15,304,189,971,249/1,661,607
6. Step 6: Final answer
   x = 9,210,475.14