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Finding the Third Proportional to 127,929 and 278,754

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Solution

The third proportional to 127,929 and 278,754 is: 607,397.79

Step by Step Solution

  1. Step 1: Write the proportion equation
    127,929 : 278,754 = 278,754 : x
  2. Step 2: Convert to fraction form
    127,929/278,754 = 278,754/x
  3. Step 3: Cross multiply
    127,929x = 278,754 × 278,754
  4. Step 4: Simplify right side
    127,929x = 77,703,792,516
  5. Step 5: Solve for x
    x = 77,703,792,516/127,929
  6. Step 6: Final answer
    x = 607,397.79

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Why These Related Problems?

These problems maintain the same ratio (2.18) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.