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Finding the Third Proportional to 8,420,342 and 18,187,636

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Solution

The third proportional to 8,420,342 and 18,187,636 is: 39,284,639.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,420,342 : 18,187,636 = 18,187,636 : x
  2. Step 2: Convert to fraction form
    8,420,342/18,187,636 = 18,187,636/x
  3. Step 3: Cross multiply
    8,420,342x = 18,187,636 × 18,187,636
  4. Step 4: Simplify right side
    8,420,342x = 330,790,103,268,496
  5. Step 5: Solve for x
    x = 330,790,103,268,496/8,420,342
  6. Step 6: Final answer
    x = 39,284,639.90

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Why These Related Problems?

These problems maintain the same ratio (2.16) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.