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Finding the Third Proportional to 8,418,915 and 18,185,019

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Solution

The third proportional to 8,418,915 and 18,185,019 is: 39,279,992.26

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,418,915 : 18,185,019 = 18,185,019 : x
  2. Step 2: Convert to fraction form
    8,418,915/18,185,019 = 18,185,019/x
  3. Step 3: Cross multiply
    8,418,915x = 18,185,019 × 18,185,019
  4. Step 4: Simplify right side
    8,418,915x = 330,694,916,030,361
  5. Step 5: Solve for x
    x = 330,694,916,030,361/8,418,915
  6. Step 6: Final answer
    x = 39,279,992.26

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Why These Related Problems?

These problems maintain the same ratio (2.16) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.