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Finding the Third Proportional to 65,045,918 and 128,446,780

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Solution

The third proportional to 65,045,918 and 128,446,780 is: 253,645,052.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    65,045,918 : 128,446,780 = 128,446,780 : x
  2. Step 2: Convert to fraction form
    65,045,918/128,446,780 = 128,446,780/x
  3. Step 3: Cross multiply
    65,045,918x = 128,446,780 × 128,446,780
  4. Step 4: Simplify right side
    65,045,918x = 16,498,575,292,368,400
  5. Step 5: Solve for x
    x = 16,498,575,292,368,400/65,045,918
  6. Step 6: Final answer
    x = 253,645,052.60

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Why These Related Problems?

These problems maintain the same ratio (1.97) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.