Finding the Third Proportional to 1,357,998 and 2,987,172

Step by Step Solution

1. Step 1: Write the proportion equation
   1,357,998 : 2,987,172 = 2,987,172 : x
2. Step 2: Convert to fraction form
   1,357,998/2,987,172 = 2,987,172/x
3. Step 3: Cross multiply
   1,357,998x = 2,987,172 × 2,987,172
4. Step 4: Simplify right side
   1,357,998x = 8,923,196,557,584
5. Step 5: Solve for x
   x = 8,923,196,557,584/1,357,998
6. Step 6: Final answer
   x = 6,570,846.61