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Finding the Third Proportional to 287,007.75 and 628,395.75

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Solution

The third proportional to 287,007.75 and 628,395.75 is: 1,375,855.59

Step by Step Solution

  1. Step 1: Write the proportion equation
    287,007.75 : 628,395.75 = 628,395.75 : x
  2. Step 2: Convert to fraction form
    287,007.75/628,395.75 = 628,395.75/x
  3. Step 3: Cross multiply
    287,007.75x = 628,395.75 × 628,395.75
  4. Step 4: Simplify right side
    287,007.75x = 394,881,218,618.06
  5. Step 5: Solve for x
    x = 394,881,218,618.06/287,007.75
  6. Step 6: Final answer
    x = 1,375,855.59

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