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Finding the Third Proportional to 393,922 and 859,118

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Solution

The third proportional to 393,922 and 859,118 is: 1,873,679.91

Step by Step Solution

  1. Step 1: Write the proportion equation
    393,922 : 859,118 = 859,118 : x
  2. Step 2: Convert to fraction form
    393,922/859,118 = 859,118/x
  3. Step 3: Cross multiply
    393,922x = 859,118 × 859,118
  4. Step 4: Simplify right side
    393,922x = 738,083,737,924
  5. Step 5: Solve for x
    x = 738,083,737,924/393,922
  6. Step 6: Final answer
    x = 1,873,679.91

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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.