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Finding the Third Proportional to 9,992,640 and 21,500,872

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Solution

The third proportional to 9,992,640 and 21,500,872 is: 46,262,799.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    9,992,640 : 21,500,872 = 21,500,872 : x
  2. Step 2: Convert to fraction form
    9,992,640/21,500,872 = 21,500,872/x
  3. Step 3: Cross multiply
    9,992,640x = 21,500,872 × 21,500,872
  4. Step 4: Simplify right side
    9,992,640x = 462,287,496,760,384
  5. Step 5: Solve for x
    x = 462,287,496,760,384/9,992,640
  6. Step 6: Final answer
    x = 46,262,799.10

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Why These Related Problems?

These problems maintain the same ratio (2.15) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.