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Finding the Third Proportional to 442,978 and 664,324

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Solution

The third proportional to 442,978 and 664,324 is: 996,271.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    442,978 : 664,324 = 664,324 : x
  2. Step 2: Convert to fraction form
    442,978/664,324 = 664,324/x
  3. Step 3: Cross multiply
    442,978x = 664,324 × 664,324
  4. Step 4: Simplify right side
    442,978x = 441,326,376,976
  5. Step 5: Solve for x
    x = 441,326,376,976/442,978
  6. Step 6: Final answer
    x = 996,271.55

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