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Finding the Third Proportional to 438,434.25 and 698,172.75

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Solution

The third proportional to 438,434.25 and 698,172.75 is: 1,111,786.29

Step by Step Solution

  1. Step 1: Write the proportion equation
    438,434.25 : 698,172.75 = 698,172.75 : x
  2. Step 2: Convert to fraction form
    438,434.25/698,172.75 = 698,172.75/x
  3. Step 3: Cross multiply
    438,434.25x = 698,172.75 × 698,172.75
  4. Step 4: Simplify right side
    438,434.25x = 487,445,188,842.56
  5. Step 5: Solve for x
    x = 487,445,188,842.56/438,434.25
  6. Step 6: Final answer
    x = 1,111,786.29

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