Finding the Third Proportional to 8,199,702 and 12,729,294

Step by Step Solution

1. Step 1: Write the proportion equation
   8,199,702 : 12,729,294 = 12,729,294 : x
2. Step 2: Convert to fraction form
   8,199,702/12,729,294 = 12,729,294/x
3. Step 3: Cross multiply
   8,199,702x = 12,729,294 × 12,729,294
4. Step 4: Simplify right side
   8,199,702x = 162,034,925,738,436
5. Step 5: Solve for x
   x = 162,034,925,738,436/8,199,702
6. Step 6: Final answer
   x = 19,761,074.94