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Finding the Third Proportional to 207,198 and 429,138

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Solution

The third proportional to 207,198 and 429,138 is: 888,808.88

Step by Step Solution

  1. Step 1: Write the proportion equation
    207,198 : 429,138 = 429,138 : x
  2. Step 2: Convert to fraction form
    207,198/429,138 = 429,138/x
  3. Step 3: Cross multiply
    207,198x = 429,138 × 429,138
  4. Step 4: Simplify right side
    207,198x = 184,159,423,044
  5. Step 5: Solve for x
    x = 184,159,423,044/207,198
  6. Step 6: Final answer
    x = 888,808.88

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Why These Related Problems?

These problems maintain the same ratio (2.07) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.