Finding the Third Proportional to 3,854,336 and 8,142,784

Step by Step Solution

1. Step 1: Write the proportion equation
   3,854,336 : 8,142,784 = 8,142,784 : x
2. Step 2: Convert to fraction form
   3,854,336/8,142,784 = 8,142,784/x
3. Step 3: Cross multiply
   3,854,336x = 8,142,784 × 8,142,784
4. Step 4: Simplify right side
   3,854,336x = 66,304,931,270,656
5. Step 5: Solve for x
   x = 66,304,931,270,656/3,854,336
6. Step 6: Final answer
   x = 17,202,685.82