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Finding the Third Proportional to 8,423,856 and 12,939,966

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Solution

The third proportional to 8,423,856 and 12,939,966 is: 19,877,205.89

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,423,856 : 12,939,966 = 12,939,966 : x
  2. Step 2: Convert to fraction form
    8,423,856/12,939,966 = 12,939,966/x
  3. Step 3: Cross multiply
    8,423,856x = 12,939,966 × 12,939,966
  4. Step 4: Simplify right side
    8,423,856x = 167,442,720,081,156
  5. Step 5: Solve for x
    x = 167,442,720,081,156/8,423,856
  6. Step 6: Final answer
    x = 19,877,205.89

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Why These Related Problems?

These problems maintain the same ratio (1.54) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.