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Finding the Third Proportional to 8,423,640 and 18,192,258

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Solution

The third proportional to 8,423,640 and 18,192,258 is: 39,289,220.71

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,423,640 : 18,192,258 = 18,192,258 : x
  2. Step 2: Convert to fraction form
    8,423,640/18,192,258 = 18,192,258/x
  3. Step 3: Cross multiply
    8,423,640x = 18,192,258 × 18,192,258
  4. Step 4: Simplify right side
    8,423,640x = 330,958,251,138,564
  5. Step 5: Solve for x
    x = 330,958,251,138,564/8,423,640
  6. Step 6: Final answer
    x = 39,289,220.71

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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.