Finding the Third Proportional to 8,122,440 and 12,185,280

Step by Step Solution

1. Step 1: Write the proportion equation
   8,122,440 : 12,185,280 = 12,185,280 : x
2. Step 2: Convert to fraction form
   8,122,440/12,185,280 = 12,185,280/x
3. Step 3: Cross multiply
   8,122,440x = 12,185,280 × 12,185,280
4. Step 4: Simplify right side
   8,122,440x = 148,481,048,678,400
5. Step 5: Solve for x
   x = 148,481,048,678,400/8,122,440
6. Step 6: Final answer
   x = 18,280,350.32