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Finding the Third Proportional to 8,553,211 and 18,612,131

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Solution

The third proportional to 8,553,211 and 18,612,131 is: 40,500,745.32

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,553,211 : 18,612,131 = 18,612,131 : x
  2. Step 2: Convert to fraction form
    8,553,211/18,612,131 = 18,612,131/x
  3. Step 3: Cross multiply
    8,553,211x = 18,612,131 × 18,612,131
  4. Step 4: Simplify right side
    8,553,211x = 346,411,420,361,161
  5. Step 5: Solve for x
    x = 346,411,420,361,161/8,553,211
  6. Step 6: Final answer
    x = 40,500,745.32

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Why These Related Problems?

These problems maintain the same ratio (2.18) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.