Finding the Third Proportional to 12,644,461 and 18,068,665

Step by Step Solution

1. Step 1: Write the proportion equation
   12,644,461 : 18,068,665 = 18,068,665 : x
2. Step 2: Convert to fraction form
   12,644,461/18,068,665 = 18,068,665/x
3. Step 3: Cross multiply
   12,644,461x = 18,068,665 × 18,068,665
4. Step 4: Simplify right side
   12,644,461x = 326,476,654,882,225
5. Step 5: Solve for x
   x = 326,476,654,882,225/12,644,461
6. Step 6: Final answer
   x = 25,819,736.79