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Finding the Third Proportional to 12,718,608 and 18,905,112

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Solution

The third proportional to 12,718,608 and 18,905,112 is: 28,100,815.73

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,718,608 : 18,905,112 = 18,905,112 : x
  2. Step 2: Convert to fraction form
    12,718,608/18,905,112 = 18,905,112/x
  3. Step 3: Cross multiply
    12,718,608x = 18,905,112 × 18,905,112
  4. Step 4: Simplify right side
    12,718,608x = 357,403,259,732,544
  5. Step 5: Solve for x
    x = 357,403,259,732,544/12,718,608
  6. Step 6: Final answer
    x = 28,100,815.73

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Why These Related Problems?

These problems maintain the same ratio (1.49) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.