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Finding the Third Proportional to 126,862 and 278,836

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Solution

The third proportional to 126,862 and 278,836 is: 612,866.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    126,862 : 278,836 = 278,836 : x
  2. Step 2: Convert to fraction form
    126,862/278,836 = 278,836/x
  3. Step 3: Cross multiply
    126,862x = 278,836 × 278,836
  4. Step 4: Simplify right side
    126,862x = 77,749,514,896
  5. Step 5: Solve for x
    x = 77,749,514,896/126,862
  6. Step 6: Final answer
    x = 612,866.85

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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.