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Finding the Third Proportional to 126,939 and 278,793

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Solution

The third proportional to 126,939 and 278,793 is: 612,306.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    126,939 : 278,793 = 278,793 : x
  2. Step 2: Convert to fraction form
    126,939/278,793 = 278,793/x
  3. Step 3: Cross multiply
    126,939x = 278,793 × 278,793
  4. Step 4: Simplify right side
    126,939x = 77,725,536,849
  5. Step 5: Solve for x
    x = 77,725,536,849/126,939
  6. Step 6: Final answer
    x = 612,306.20

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Why These Related Problems?

These problems maintain the same ratio (2.20) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.