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Finding the Third Proportional to 126,858 and 278,828

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Solution

The third proportional to 126,858 and 278,828 is: 612,851.01

Step by Step Solution

  1. Step 1: Write the proportion equation
    126,858 : 278,828 = 278,828 : x
  2. Step 2: Convert to fraction form
    126,858/278,828 = 278,828/x
  3. Step 3: Cross multiply
    126,858x = 278,828 × 278,828
  4. Step 4: Simplify right side
    126,858x = 77,745,053,584
  5. Step 5: Solve for x
    x = 77,745,053,584/126,858
  6. Step 6: Final answer
    x = 612,851.01

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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.