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Finding the Third Proportional to 12,861,794 and 19,906,239

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Solution

The third proportional to 12,861,794 and 19,906,239 is: 30,808,948.67

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,861,794 : 19,906,239 = 19,906,239 : x
  2. Step 2: Convert to fraction form
    12,861,794/19,906,239 = 19,906,239/x
  3. Step 3: Cross multiply
    12,861,794x = 19,906,239 × 19,906,239
  4. Step 4: Simplify right side
    12,861,794x = 396,258,351,125,121
  5. Step 5: Solve for x
    x = 396,258,351,125,121/12,861,794
  6. Step 6: Final answer
    x = 30,808,948.67

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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.