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Finding the Third Proportional to 393,017 and 842,110

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Solution

The third proportional to 393,017 and 842,110 is: 1,804,372.97

Step by Step Solution

  1. Step 1: Write the proportion equation
    393,017 : 842,110 = 842,110 : x
  2. Step 2: Convert to fraction form
    393,017/842,110 = 842,110/x
  3. Step 3: Cross multiply
    393,017x = 842,110 × 842,110
  4. Step 4: Simplify right side
    393,017x = 709,149,252,100
  5. Step 5: Solve for x
    x = 709,149,252,100/393,017
  6. Step 6: Final answer
    x = 1,804,372.97

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Why These Related Problems?

These problems maintain the same ratio (2.14) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.