Finding the Third Proportional to 3,968,769 and 8,414,426

Step by Step Solution

1. Step 1: Write the proportion equation
   3,968,769 : 8,414,426 = 8,414,426 : x
2. Step 2: Convert to fraction form
   3,968,769/8,414,426 = 8,414,426/x
3. Step 3: Cross multiply
   3,968,769x = 8,414,426 × 8,414,426
4. Step 4: Simplify right side
   3,968,769x = 70,802,564,909,476
5. Step 5: Solve for x
   x = 70,802,564,909,476/3,968,769
6. Step 6: Final answer
   x = 17,839,930.95