Finding the Third Proportional to 4,051,680 and 8,645,682

Step by Step Solution

1. Step 1: Write the proportion equation
   4,051,680 : 8,645,682 = 8,645,682 : x
2. Step 2: Convert to fraction form
   4,051,680/8,645,682 = 8,645,682/x
3. Step 3: Cross multiply
   4,051,680x = 8,645,682 × 8,645,682
4. Step 4: Simplify right side
   4,051,680x = 74,747,817,245,124
5. Step 5: Solve for x
   x = 74,747,817,245,124/4,051,680
6. Step 6: Final answer
   x = 18,448,598.42