Finding the Third Proportional to 12,290,930 and 17,705,499

Step by Step Solution

1. Step 1: Write the proportion equation
   12,290,930 : 17,705,499 = 17,705,499 : x
2. Step 2: Convert to fraction form
   12,290,930/17,705,499 = 17,705,499/x
3. Step 3: Cross multiply
   12,290,930x = 17,705,499 × 17,705,499
4. Step 4: Simplify right side
   12,290,930x = 313,484,694,839,001
5. Step 5: Solve for x
   x = 313,484,694,839,001/12,290,930
6. Step 6: Final answer
   x = 25,505,368.17