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Finding the Third Proportional to 11,978,687 and 18,617,759

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Solution

The third proportional to 11,978,687 and 18,617,759 is: 28,936,472.77

Step by Step Solution

  1. Step 1: Write the proportion equation
    11,978,687 : 18,617,759 = 18,617,759 : x
  2. Step 2: Convert to fraction form
    11,978,687/18,617,759 = 18,617,759/x
  3. Step 3: Cross multiply
    11,978,687x = 18,617,759 × 18,617,759
  4. Step 4: Simplify right side
    11,978,687x = 346,620,950,182,081
  5. Step 5: Solve for x
    x = 346,620,950,182,081/11,978,687
  6. Step 6: Final answer
    x = 28,936,472.77

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These problems maintain the same ratio (1.55) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.