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Finding the Third Proportional to 74,992 and 108,978

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Solution

The third proportional to 74,992 and 108,978 is: 158,366.29

Step by Step Solution

  1. Step 1: Write the proportion equation
    74,992 : 108,978 = 108,978 : x
  2. Step 2: Convert to fraction form
    74,992/108,978 = 108,978/x
  3. Step 3: Cross multiply
    74,992x = 108,978 × 108,978
  4. Step 4: Simplify right side
    74,992x = 11,876,204,484
  5. Step 5: Solve for x
    x = 11,876,204,484/74,992
  6. Step 6: Final answer
    x = 158,366.29

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