Finding the Third Proportional to 8,240,790 and 12,122,955

Step by Step Solution

1. Step 1: Write the proportion equation
   8,240,790 : 12,122,955 = 12,122,955 : x
2. Step 2: Convert to fraction form
   8,240,790/12,122,955 = 12,122,955/x
3. Step 3: Cross multiply
   8,240,790x = 12,122,955 × 12,122,955
4. Step 4: Simplify right side
   8,240,790x = 146,966,037,932,025
5. Step 5: Solve for x
   x = 146,966,037,932,025/8,240,790
6. Step 6: Final answer
   x = 17,833,974.40