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Finding the Third Proportional to 398,117.25 and 866,218.50

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Solution

The third proportional to 398,117.25 and 866,218.50 is: 1,884,707.31

Step by Step Solution

  1. Step 1: Write the proportion equation
    398,117.25 : 866,218.50 = 866,218.50 : x
  2. Step 2: Convert to fraction form
    398,117.25/866,218.50 = 866,218.50/x
  3. Step 3: Cross multiply
    398,117.25x = 866,218.50 × 866,218.50
  4. Step 4: Simplify right side
    398,117.25x = 750,334,489,742.25
  5. Step 5: Solve for x
    x = 750,334,489,742.25/398,117.25
  6. Step 6: Final answer
    x = 1,884,707.31

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