Finding the Third Proportional to 1,166,431 and 1,667,999

Step by Step Solution

1. Step 1: Write the proportion equation
   1,166,431 : 1,667,999 = 1,667,999 : x
2. Step 2: Convert to fraction form
   1,166,431/1,667,999 = 1,667,999/x
3. Step 3: Cross multiply
   1,166,431x = 1,667,999 × 1,667,999
4. Step 4: Simplify right side
   1,166,431x = 2,782,220,664,001
5. Step 5: Solve for x
   x = 2,782,220,664,001/1,166,431
6. Step 6: Final answer
   x = 2,385,242.39