Finding the Third Proportional to 7,839,666 and 11,759,499

Step by Step Solution

1. Step 1: Write the proportion equation
   7,839,666 : 11,759,499 = 11,759,499 : x
2. Step 2: Convert to fraction form
   7,839,666/11,759,499 = 11,759,499/x
3. Step 3: Cross multiply
   7,839,666x = 11,759,499 × 11,759,499
4. Step 4: Simplify right side
   7,839,666x = 138,285,816,731,001
5. Step 5: Solve for x
   x = 138,285,816,731,001/7,839,666
6. Step 6: Final answer
   x = 17,639,248.50