Finding the Third Proportional to 4,038,005 and 8,643,510

Step by Step Solution

1. Step 1: Write the proportion equation
   4,038,005 : 8,643,510 = 8,643,510 : x
2. Step 2: Convert to fraction form
   4,038,005/8,643,510 = 8,643,510/x
3. Step 3: Cross multiply
   4,038,005x = 8,643,510 × 8,643,510
4. Step 4: Simplify right side
   4,038,005x = 74,710,265,120,100
5. Step 5: Solve for x
   x = 74,710,265,120,100/4,038,005
6. Step 6: Final answer
   x = 18,501,776.28