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Finding the Third Proportional to 8,638,288 and 18,903,703

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Solution

The third proportional to 8,638,288 and 18,903,703 is: 41,368,149.23

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,638,288 : 18,903,703 = 18,903,703 : x
  2. Step 2: Convert to fraction form
    8,638,288/18,903,703 = 18,903,703/x
  3. Step 3: Cross multiply
    8,638,288x = 18,903,703 × 18,903,703
  4. Step 4: Simplify right side
    8,638,288x = 357,349,987,112,209
  5. Step 5: Solve for x
    x = 357,349,987,112,209/8,638,288
  6. Step 6: Final answer
    x = 41,368,149.23

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Why These Related Problems?

These problems maintain the same ratio (2.19) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.