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Finding the Third Proportional to 7,779,978 and 11,777,373

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Solution

The third proportional to 7,779,978 and 11,777,373 is: 17,828,651.29

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,779,978 : 11,777,373 = 11,777,373 : x
  2. Step 2: Convert to fraction form
    7,779,978/11,777,373 = 11,777,373/x
  3. Step 3: Cross multiply
    7,779,978x = 11,777,373 × 11,777,373
  4. Step 4: Simplify right side
    7,779,978x = 138,706,514,781,129
  5. Step 5: Solve for x
    x = 138,706,514,781,129/7,779,978
  6. Step 6: Final answer
    x = 17,828,651.29

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Why These Related Problems?

These problems maintain the same ratio (1.51) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.