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Finding the Third Proportional to 1,239,909 and 2,628,612

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Solution

The third proportional to 1,239,909 and 2,628,612 is: 5,572,667.87

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,239,909 : 2,628,612 = 2,628,612 : x
  2. Step 2: Convert to fraction form
    1,239,909/2,628,612 = 2,628,612/x
  3. Step 3: Cross multiply
    1,239,909x = 2,628,612 × 2,628,612
  4. Step 4: Simplify right side
    1,239,909x = 6,909,601,046,544
  5. Step 5: Solve for x
    x = 6,909,601,046,544/1,239,909
  6. Step 6: Final answer
    x = 5,572,667.87

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Why These Related Problems?

These problems maintain the same ratio (2.12) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.