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Finding the Third Proportional to 259,918 and 558,513

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Solution

The third proportional to 259,918 and 558,513 is: 1,200,135.32

Step by Step Solution

  1. Step 1: Write the proportion equation
    259,918 : 558,513 = 558,513 : x
  2. Step 2: Convert to fraction form
    259,918/558,513 = 558,513/x
  3. Step 3: Cross multiply
    259,918x = 558,513 × 558,513
  4. Step 4: Simplify right side
    259,918x = 311,936,771,169
  5. Step 5: Solve for x
    x = 311,936,771,169/259,918
  6. Step 6: Final answer
    x = 1,200,135.32

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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.