Finding the Third Proportional to 3,840,978 and 8,277,432

Step by Step Solution

1. Step 1: Write the proportion equation
   3,840,978 : 8,277,432 = 8,277,432 : x
2. Step 2: Convert to fraction form
   3,840,978/8,277,432 = 8,277,432/x
3. Step 3: Cross multiply
   3,840,978x = 8,277,432 × 8,277,432
4. Step 4: Simplify right side
   3,840,978x = 68,515,880,514,624
5. Step 5: Solve for x
   x = 68,515,880,514,624/3,840,978
6. Step 6: Final answer
   x = 17,838,134.07