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Finding the Third Proportional to 628,820 and 888,910

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Solution

The third proportional to 628,820 and 888,910 is: 1,256,577.38

Step by Step Solution

  1. Step 1: Write the proportion equation
    628,820 : 888,910 = 888,910 : x
  2. Step 2: Convert to fraction form
    628,820/888,910 = 888,910/x
  3. Step 3: Cross multiply
    628,820x = 888,910 × 888,910
  4. Step 4: Simplify right side
    628,820x = 790,160,988,100
  5. Step 5: Solve for x
    x = 790,160,988,100/628,820
  6. Step 6: Final answer
    x = 1,256,577.38

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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.