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Finding the Third Proportional to 438,786 and 655,308

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Solution

The third proportional to 438,786 and 655,308 is: 978,674.29

Step by Step Solution

  1. Step 1: Write the proportion equation
    438,786 : 655,308 = 655,308 : x
  2. Step 2: Convert to fraction form
    438,786/655,308 = 655,308/x
  3. Step 3: Cross multiply
    438,786x = 655,308 × 655,308
  4. Step 4: Simplify right side
    438,786x = 429,428,574,864
  5. Step 5: Solve for x
    x = 429,428,574,864/438,786
  6. Step 6: Final answer
    x = 978,674.29

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