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Finding the Third Proportional to 120,592 and 258,679

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Solution

The third proportional to 120,592 and 258,679 is: 554,886.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    120,592 : 258,679 = 258,679 : x
  2. Step 2: Convert to fraction form
    120,592/258,679 = 258,679/x
  3. Step 3: Cross multiply
    120,592x = 258,679 × 258,679
  4. Step 4: Simplify right side
    120,592x = 66,914,825,041
  5. Step 5: Solve for x
    x = 66,914,825,041/120,592
  6. Step 6: Final answer
    x = 554,886.10

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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.