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Finding the Third Proportional to 172,926 and 354,393

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Solution

The third proportional to 172,926 and 354,393 is: 726,289.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    172,926 : 354,393 = 354,393 : x
  2. Step 2: Convert to fraction form
    172,926/354,393 = 354,393/x
  3. Step 3: Cross multiply
    172,926x = 354,393 × 354,393
  4. Step 4: Simplify right side
    172,926x = 125,594,398,449
  5. Step 5: Solve for x
    x = 125,594,398,449/172,926
  6. Step 6: Final answer
    x = 726,289.85

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Why These Related Problems?

These problems maintain the same ratio (2.05) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.