Finding the Third Proportional to 8,242,404 and 12,608,374

Step by Step Solution

1. Step 1: Write the proportion equation
   8,242,404 : 12,608,374 = 12,608,374 : x
2. Step 2: Convert to fraction form
   8,242,404/12,608,374 = 12,608,374/x
3. Step 3: Cross multiply
   8,242,404x = 12,608,374 × 12,608,374
4. Step 4: Simplify right side
   8,242,404x = 158,971,094,923,876
5. Step 5: Solve for x
   x = 158,971,094,923,876/8,242,404
6. Step 6: Final answer
   x = 19,286,981.68