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Finding the Third Proportional to 207,979 and 425,791

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Solution

The third proportional to 207,979 and 425,791 is: 871,712.89

Step by Step Solution

  1. Step 1: Write the proportion equation
    207,979 : 425,791 = 425,791 : x
  2. Step 2: Convert to fraction form
    207,979/425,791 = 425,791/x
  3. Step 3: Cross multiply
    207,979x = 425,791 × 425,791
  4. Step 4: Simplify right side
    207,979x = 181,297,975,681
  5. Step 5: Solve for x
    x = 181,297,975,681/207,979
  6. Step 6: Final answer
    x = 871,712.89

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Why These Related Problems?

These problems maintain the same ratio (2.05) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.