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Finding the Third Proportional to 28,690 and 62,918

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Solution

The third proportional to 28,690 and 62,918 is: 137,980.99

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,690 : 62,918 = 62,918 : x
  2. Step 2: Convert to fraction form
    28,690/62,918 = 62,918/x
  3. Step 3: Cross multiply
    28,690x = 62,918 × 62,918
  4. Step 4: Simplify right side
    28,690x = 3,958,674,724
  5. Step 5: Solve for x
    x = 3,958,674,724/28,690
  6. Step 6: Final answer
    x = 137,980.99

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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.