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Finding the Third Proportional to 366,978 and 561,406

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Solution

The third proportional to 366,978 and 561,406 is: 858,843.57

Step by Step Solution

  1. Step 1: Write the proportion equation
    366,978 : 561,406 = 561,406 : x
  2. Step 2: Convert to fraction form
    366,978/561,406 = 561,406/x
  3. Step 3: Cross multiply
    366,978x = 561,406 × 561,406
  4. Step 4: Simplify right side
    366,978x = 315,176,696,836
  5. Step 5: Solve for x
    x = 315,176,696,836/366,978
  6. Step 6: Final answer
    x = 858,843.57

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