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Finding the Third Proportional to 8,928,918 and 19,379,988

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Solution

The third proportional to 8,928,918 and 19,379,988 is: 42,063,767.96

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,928,918 : 19,379,988 = 19,379,988 : x
  2. Step 2: Convert to fraction form
    8,928,918/19,379,988 = 19,379,988/x
  3. Step 3: Cross multiply
    8,928,918x = 19,379,988 × 19,379,988
  4. Step 4: Simplify right side
    8,928,918x = 375,583,934,880,144
  5. Step 5: Solve for x
    x = 375,583,934,880,144/8,928,918
  6. Step 6: Final answer
    x = 42,063,767.96

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Why These Related Problems?

These problems maintain the same ratio (2.17) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.