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Finding the Third Proportional to 12,929,442 and 28,128,912

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Solution

The third proportional to 12,929,442 and 28,128,912 is: 61,196,429.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,929,442 : 28,128,912 = 28,128,912 : x
  2. Step 2: Convert to fraction form
    12,929,442/28,128,912 = 28,128,912/x
  3. Step 3: Cross multiply
    12,929,442x = 28,128,912 × 28,128,912
  4. Step 4: Simplify right side
    12,929,442x = 791,235,690,303,744
  5. Step 5: Solve for x
    x = 791,235,690,303,744/12,929,442
  6. Step 6: Final answer
    x = 61,196,429.85

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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.