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Finding the Third Proportional to 7,754,289 and 12,878,889

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Solution

The third proportional to 7,754,289 and 12,878,889 is: 21,390,198.62

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,754,289 : 12,878,889 = 12,878,889 : x
  2. Step 2: Convert to fraction form
    7,754,289/12,878,889 = 12,878,889/x
  3. Step 3: Cross multiply
    7,754,289x = 12,878,889 × 12,878,889
  4. Step 4: Simplify right side
    7,754,289x = 165,865,781,874,321
  5. Step 5: Solve for x
    x = 165,865,781,874,321/7,754,289
  6. Step 6: Final answer
    x = 21,390,198.62

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Why These Related Problems?

These problems maintain the same ratio (1.66) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.