Finding the Third Proportional to 4,102,432 and 8,978,144

Step by Step Solution

1. Step 1: Write the proportion equation
   4,102,432 : 8,978,144 = 8,978,144 : x
2. Step 2: Convert to fraction form
   4,102,432/8,978,144 = 8,978,144/x
3. Step 3: Cross multiply
   4,102,432x = 8,978,144 × 8,978,144
4. Step 4: Simplify right side
   4,102,432x = 80,607,069,684,736
5. Step 5: Solve for x
   x = 80,607,069,684,736/4,102,432
6. Step 6: Final answer
   x = 19,648,605.92