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Finding the Third Proportional to 345,559 and 718,705

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Solution

The third proportional to 345,559 and 718,705 is: 1,494,786.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    345,559 : 718,705 = 718,705 : x
  2. Step 2: Convert to fraction form
    345,559/718,705 = 718,705/x
  3. Step 3: Cross multiply
    345,559x = 718,705 × 718,705
  4. Step 4: Simplify right side
    345,559x = 516,536,877,025
  5. Step 5: Solve for x
    x = 516,536,877,025/345,559
  6. Step 6: Final answer
    x = 1,494,786.35

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Why These Related Problems?

These problems maintain the same ratio (2.08) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.