Finding the Third Proportional to 8,242,402 and 12,608,386

Step by Step Solution

1. Step 1: Write the proportion equation
   8,242,402 : 12,608,386 = 12,608,386 : x
2. Step 2: Convert to fraction form
   8,242,402/12,608,386 = 12,608,386/x
3. Step 3: Cross multiply
   8,242,402x = 12,608,386 × 12,608,386
4. Step 4: Simplify right side
   8,242,402x = 158,971,397,524,996
5. Step 5: Solve for x
   x = 158,971,397,524,996/8,242,402
6. Step 6: Final answer
   x = 19,287,023.07