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Finding the Third Proportional to 399,249 and 864,958.50

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Solution

The third proportional to 399,249 and 864,958.50 is: 1,873,901.27

Step by Step Solution

  1. Step 1: Write the proportion equation
    399,249 : 864,958.50 = 864,958.50 : x
  2. Step 2: Convert to fraction form
    399,249/864,958.50 = 864,958.50/x
  3. Step 3: Cross multiply
    399,249x = 864,958.50 × 864,958.50
  4. Step 4: Simplify right side
    399,249x = 748,153,206,722.25
  5. Step 5: Solve for x
    x = 748,153,206,722.25/399,249
  6. Step 6: Final answer
    x = 1,873,901.27

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