Finding the Third Proportional to 2,557,120.50 and 3,970,147.50

Step by Step Solution

1. Step 1: Write the proportion equation
   2,557,120.50 : 3,970,147.50 = 3,970,147.50 : x
2. Step 2: Convert to fraction form
   2,557,120.50/3,970,147.50 = 3,970,147.50/x
3. Step 3: Cross multiply
   2,557,120.50x = 3,970,147.50 × 3,970,147.50
4. Step 4: Simplify right side
   2,557,120.50x = 15,762,071,171,756.25
5. Step 5: Solve for x
   x = 15,762,071,171,756.25/2,557,120.50
6. Step 6: Final answer
   x = 6,163,992.34