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Finding the Third Proportional to 21,000,978 and 31,502,028

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Solution

The third proportional to 21,000,978 and 31,502,028 is: 47,253,883.51

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,000,978 : 31,502,028 = 31,502,028 : x
  2. Step 2: Convert to fraction form
    21,000,978/31,502,028 = 31,502,028/x
  3. Step 3: Cross multiply
    21,000,978x = 31,502,028 × 31,502,028
  4. Step 4: Simplify right side
    21,000,978x = 992,377,768,112,784
  5. Step 5: Solve for x
    x = 992,377,768,112,784/21,000,978
  6. Step 6: Final answer
    x = 47,253,883.51

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