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Finding the Third Proportional to 628,868 and 888,991

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Solution

The third proportional to 628,868 and 888,991 is: 1,256,710.47

Step by Step Solution

  1. Step 1: Write the proportion equation
    628,868 : 888,991 = 888,991 : x
  2. Step 2: Convert to fraction form
    628,868/888,991 = 888,991/x
  3. Step 3: Cross multiply
    628,868x = 888,991 × 888,991
  4. Step 4: Simplify right side
    628,868x = 790,304,998,081
  5. Step 5: Solve for x
    x = 790,304,998,081/628,868
  6. Step 6: Final answer
    x = 1,256,710.47

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Why These Related Problems?

These problems maintain the same ratio (1.41) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.