Finding the Third Proportional to 12,290,936 and 17,705,508

Step by Step Solution

1. Step 1: Write the proportion equation
   12,290,936 : 17,705,508 = 17,705,508 : x
2. Step 2: Convert to fraction form
   12,290,936/17,705,508 = 17,705,508/x
3. Step 3: Cross multiply
   12,290,936x = 17,705,508 × 17,705,508
4. Step 4: Simplify right side
   12,290,936x = 313,485,013,538,064
5. Step 5: Solve for x
   x = 313,485,013,538,064/12,290,936
6. Step 6: Final answer
   x = 25,505,381.65