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Finding the Third Proportional to 8,421,718 and 18,522,668

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Solution

The third proportional to 8,421,718 and 18,522,668 is: 40,738,627.18

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,421,718 : 18,522,668 = 18,522,668 : x
  2. Step 2: Convert to fraction form
    8,421,718/18,522,668 = 18,522,668/x
  3. Step 3: Cross multiply
    8,421,718x = 18,522,668 × 18,522,668
  4. Step 4: Simplify right side
    8,421,718x = 343,089,229,838,224
  5. Step 5: Solve for x
    x = 343,089,229,838,224/8,421,718
  6. Step 6: Final answer
    x = 40,738,627.18

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Why These Related Problems?

These problems maintain the same ratio (2.20) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.