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Finding the Third Proportional to 12,206,721 and 18,884,055

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Solution

The third proportional to 12,206,721 and 18,884,055 is: 29,214,031.62

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,206,721 : 18,884,055 = 18,884,055 : x
  2. Step 2: Convert to fraction form
    12,206,721/18,884,055 = 18,884,055/x
  3. Step 3: Cross multiply
    12,206,721x = 18,884,055 × 18,884,055
  4. Step 4: Simplify right side
    12,206,721x = 356,607,533,243,025
  5. Step 5: Solve for x
    x = 356,607,533,243,025/12,206,721
  6. Step 6: Final answer
    x = 29,214,031.62

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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.