Finding the Third Proportional to 8,242,406 and 12,608,377

Step by Step Solution

1. Step 1: Write the proportion equation
   8,242,406 : 12,608,377 = 12,608,377 : x
2. Step 2: Convert to fraction form
   8,242,406/12,608,377 = 12,608,377/x
3. Step 3: Cross multiply
   8,242,406x = 12,608,377 × 12,608,377
4. Step 4: Simplify right side
   8,242,406x = 158,971,170,574,129
5. Step 5: Solve for x
   x = 158,971,170,574,129/8,242,406
6. Step 6: Final answer
   x = 19,286,986.18