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Finding the Third Proportional to 458,931.75 and 645,135.75

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Solution

The third proportional to 458,931.75 and 645,135.75 is: 906,888.96

Step by Step Solution

  1. Step 1: Write the proportion equation
    458,931.75 : 645,135.75 = 645,135.75 : x
  2. Step 2: Convert to fraction form
    458,931.75/645,135.75 = 645,135.75/x
  3. Step 3: Cross multiply
    458,931.75x = 645,135.75 × 645,135.75
  4. Step 4: Simplify right side
    458,931.75x = 416,200,135,928.06
  5. Step 5: Solve for x
    x = 416,200,135,928.06/458,931.75
  6. Step 6: Final answer
    x = 906,888.96

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