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Finding the Third Proportional to 12,212,076 and 18,891,999

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Solution

The third proportional to 12,212,076 and 18,891,999 is: 29,225,794.71

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,212,076 : 18,891,999 = 18,891,999 : x
  2. Step 2: Convert to fraction form
    12,212,076/18,891,999 = 18,891,999/x
  3. Step 3: Cross multiply
    12,212,076x = 18,891,999 × 18,891,999
  4. Step 4: Simplify right side
    12,212,076x = 356,907,626,216,001
  5. Step 5: Solve for x
    x = 356,907,626,216,001/12,212,076
  6. Step 6: Final answer
    x = 29,225,794.71

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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.