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Finding the Third Proportional to 392,885 and 857,737

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Solution

The third proportional to 392,885 and 857,737 is: 1,872,590.61

Step by Step Solution

  1. Step 1: Write the proportion equation
    392,885 : 857,737 = 857,737 : x
  2. Step 2: Convert to fraction form
    392,885/857,737 = 857,737/x
  3. Step 3: Cross multiply
    392,885x = 857,737 × 857,737
  4. Step 4: Simplify right side
    392,885x = 735,712,761,169
  5. Step 5: Solve for x
    x = 735,712,761,169/392,885
  6. Step 6: Final answer
    x = 1,872,590.61

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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.