Finding the Third Proportional to 4,172,838 and 8,896,860

Step by Step Solution

1. Step 1: Write the proportion equation
   4,172,838 : 8,896,860 = 8,896,860 : x
2. Step 2: Convert to fraction form
   4,172,838/8,896,860 = 8,896,860/x
3. Step 3: Cross multiply
   4,172,838x = 8,896,860 × 8,896,860
4. Step 4: Simplify right side
   4,172,838x = 79,154,117,859,600
5. Step 5: Solve for x
   x = 79,154,117,859,600/4,172,838
6. Step 6: Final answer
   x = 18,968,893.08