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Finding the Third Proportional to 18,987,812 and 29,382,790

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Solution

The third proportional to 18,987,812 and 29,382,790 is: 45,468,553.63

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,987,812 : 29,382,790 = 29,382,790 : x
  2. Step 2: Convert to fraction form
    18,987,812/29,382,790 = 29,382,790/x
  3. Step 3: Cross multiply
    18,987,812x = 29,382,790 × 29,382,790
  4. Step 4: Simplify right side
    18,987,812x = 863,348,348,184,100
  5. Step 5: Solve for x
    x = 863,348,348,184,100/18,987,812
  6. Step 6: Final answer
    x = 45,468,553.63

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Why These Related Problems?

These problems maintain the same ratio (1.55) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.