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Finding the Third Proportional to 210,909 and 457,812

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Solution

The third proportional to 210,909 and 457,812 is: 993,754.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    210,909 : 457,812 = 457,812 : x
  2. Step 2: Convert to fraction form
    210,909/457,812 = 457,812/x
  3. Step 3: Cross multiply
    210,909x = 457,812 × 457,812
  4. Step 4: Simplify right side
    210,909x = 209,591,827,344
  5. Step 5: Solve for x
    x = 209,591,827,344/210,909
  6. Step 6: Final answer
    x = 993,754.78

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Why These Related Problems?

These problems maintain the same ratio (2.17) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.