Finding the Third Proportional to 4,047,378 and 8,619,114

Step by Step Solution

1. Step 1: Write the proportion equation
   4,047,378 : 8,619,114 = 8,619,114 : x
2. Step 2: Convert to fraction form
   4,047,378/8,619,114 = 8,619,114/x
3. Step 3: Cross multiply
   4,047,378x = 8,619,114 × 8,619,114
4. Step 4: Simplify right side
   4,047,378x = 74,289,126,144,996
5. Step 5: Solve for x
   x = 74,289,126,144,996/4,047,378
6. Step 6: Final answer
   x = 18,354,877.19