Finding the Third Proportional to 8,242,399 and 12,608,380.50

Step by Step Solution

1. Step 1: Write the proportion equation
   8,242,399 : 12,608,380.50 = 12,608,380.50 : x
2. Step 2: Convert to fraction form
   8,242,399/12,608,380.50 = 12,608,380.50/x
3. Step 3: Cross multiply
   8,242,399x = 12,608,380.50 × 12,608,380.50
4. Step 4: Simplify right side
   8,242,399x = 158,971,258,832,780.25
5. Step 5: Solve for x
   x = 158,971,258,832,780.25/8,242,399
6. Step 6: Final answer
   x = 19,287,013.26