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Finding the Third Proportional to 428,862.75 and 630,819.75

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Solution

The third proportional to 428,862.75 and 630,819.75 is: 927,880.91

Step by Step Solution

  1. Step 1: Write the proportion equation
    428,862.75 : 630,819.75 = 630,819.75 : x
  2. Step 2: Convert to fraction form
    428,862.75/630,819.75 = 630,819.75/x
  3. Step 3: Cross multiply
    428,862.75x = 630,819.75 × 630,819.75
  4. Step 4: Simplify right side
    428,862.75x = 397,933,556,990.06
  5. Step 5: Solve for x
    x = 397,933,556,990.06/428,862.75
  6. Step 6: Final answer
    x = 927,880.91

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