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Finding the Third Proportional to 8,921,240 and 18,993,328

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Solution

The third proportional to 8,921,240 and 18,993,328 is: 40,436,812.43

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,921,240 : 18,993,328 = 18,993,328 : x
  2. Step 2: Convert to fraction form
    8,921,240/18,993,328 = 18,993,328/x
  3. Step 3: Cross multiply
    8,921,240x = 18,993,328 × 18,993,328
  4. Step 4: Simplify right side
    8,921,240x = 360,746,508,515,584
  5. Step 5: Solve for x
    x = 360,746,508,515,584/8,921,240
  6. Step 6: Final answer
    x = 40,436,812.43

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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.