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Finding the Third Proportional to 8,921,236 and 18,993,320

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Solution

The third proportional to 8,921,236 and 18,993,320 is: 40,436,796.50

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,921,236 : 18,993,320 = 18,993,320 : x
  2. Step 2: Convert to fraction form
    8,921,236/18,993,320 = 18,993,320/x
  3. Step 3: Cross multiply
    8,921,236x = 18,993,320 × 18,993,320
  4. Step 4: Simplify right side
    8,921,236x = 360,746,204,622,400
  5. Step 5: Solve for x
    x = 360,746,204,622,400/8,921,236
  6. Step 6: Final answer
    x = 40,436,796.50

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Why These Related Problems?

These problems maintain the same ratio (2.13) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.