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Finding the Third Proportional to 207,453 and 422,517

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Solution

The third proportional to 207,453 and 422,517 is: 860,535.23

Step by Step Solution

  1. Step 1: Write the proportion equation
    207,453 : 422,517 = 422,517 : x
  2. Step 2: Convert to fraction form
    207,453/422,517 = 422,517/x
  3. Step 3: Cross multiply
    207,453x = 422,517 × 422,517
  4. Step 4: Simplify right side
    207,453x = 178,520,615,289
  5. Step 5: Solve for x
    x = 178,520,615,289/207,453
  6. Step 6: Final answer
    x = 860,535.23

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Why These Related Problems?

These problems maintain the same ratio (2.04) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.