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Finding the Third Proportional to 406,908 and 886,116

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Solution

The third proportional to 406,908 and 886,116 is: 1,929,678.37

Step by Step Solution

  1. Step 1: Write the proportion equation
    406,908 : 886,116 = 886,116 : x
  2. Step 2: Convert to fraction form
    406,908/886,116 = 886,116/x
  3. Step 3: Cross multiply
    406,908x = 886,116 × 886,116
  4. Step 4: Simplify right side
    406,908x = 785,201,565,456
  5. Step 5: Solve for x
    x = 785,201,565,456/406,908
  6. Step 6: Final answer
    x = 1,929,678.37

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Why These Related Problems?

These problems maintain the same ratio (2.18) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.