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Finding the Third Proportional to 12,169,657 and 18,818,288

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Solution

The third proportional to 12,169,657 and 18,818,288 is: 29,099,255.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,169,657 : 18,818,288 = 18,818,288 : x
  2. Step 2: Convert to fraction form
    12,169,657/18,818,288 = 18,818,288/x
  3. Step 3: Cross multiply
    12,169,657x = 18,818,288 × 18,818,288
  4. Step 4: Simplify right side
    12,169,657x = 354,127,963,250,944
  5. Step 5: Solve for x
    x = 354,127,963,250,944/12,169,657
  6. Step 6: Final answer
    x = 29,099,255.90

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These problems maintain the same ratio (1.55) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.