Finding the Third Proportional to 3,913,970 and 5,987,643

Step by Step Solution

1. Step 1: Write the proportion equation
   3,913,970 : 5,987,643 = 5,987,643 : x
2. Step 2: Convert to fraction form
   3,913,970/5,987,643 = 5,987,643/x
3. Step 3: Cross multiply
   3,913,970x = 5,987,643 × 5,987,643
4. Step 4: Simplify right side
   3,913,970x = 35,851,868,695,449
5. Step 5: Solve for x
   x = 35,851,868,695,449/3,913,970
6. Step 6: Final answer
   x = 9,159,975.34