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Finding the Third Proportional to 120,717 and 259,842

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Solution

The third proportional to 120,717 and 259,842 is: 559,307.02

Step by Step Solution

  1. Step 1: Write the proportion equation
    120,717 : 259,842 = 259,842 : x
  2. Step 2: Convert to fraction form
    120,717/259,842 = 259,842/x
  3. Step 3: Cross multiply
    120,717x = 259,842 × 259,842
  4. Step 4: Simplify right side
    120,717x = 67,517,864,964
  5. Step 5: Solve for x
    x = 67,517,864,964/120,717
  6. Step 6: Final answer
    x = 559,307.02

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Why These Related Problems?

These problems maintain the same ratio (2.15) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.