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Finding the Third Proportional to 8,622,978 and 18,776,862

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Solution

The third proportional to 8,622,978 and 18,776,862 is: 40,887,329.94

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,622,978 : 18,776,862 = 18,776,862 : x
  2. Step 2: Convert to fraction form
    8,622,978/18,776,862 = 18,776,862/x
  3. Step 3: Cross multiply
    8,622,978x = 18,776,862 × 18,776,862
  4. Step 4: Simplify right side
    8,622,978x = 352,570,546,567,044
  5. Step 5: Solve for x
    x = 352,570,546,567,044/8,622,978
  6. Step 6: Final answer
    x = 40,887,329.94

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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.