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Finding the Third Proportional to 8,856,978 and 13,239,324

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Solution

The third proportional to 8,856,978 and 13,239,324 is: 19,790,011.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,856,978 : 13,239,324 = 13,239,324 : x
  2. Step 2: Convert to fraction form
    8,856,978/13,239,324 = 13,239,324/x
  3. Step 3: Cross multiply
    8,856,978x = 13,239,324 × 13,239,324
  4. Step 4: Simplify right side
    8,856,978x = 175,279,699,976,976
  5. Step 5: Solve for x
    x = 175,279,699,976,976/8,856,978
  6. Step 6: Final answer
    x = 19,790,011.90

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Why These Related Problems?

These problems maintain the same ratio (1.49) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.