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Finding the Third Proportional to 8,418,820 and 18,412,279

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Solution

The third proportional to 8,418,820 and 18,412,279 is: 40,268,353.28

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,418,820 : 18,412,279 = 18,412,279 : x
  2. Step 2: Convert to fraction form
    8,418,820/18,412,279 = 18,412,279/x
  3. Step 3: Cross multiply
    8,418,820x = 18,412,279 × 18,412,279
  4. Step 4: Simplify right side
    8,418,820x = 339,012,017,973,841
  5. Step 5: Solve for x
    x = 339,012,017,973,841/8,418,820
  6. Step 6: Final answer
    x = 40,268,353.28

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Why These Related Problems?

These problems maintain the same ratio (2.19) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.