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Finding the Third Proportional to 336,518 and 719,728

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Solution

The third proportional to 336,518 and 719,728 is: 1,539,318.53

Step by Step Solution

  1. Step 1: Write the proportion equation
    336,518 : 719,728 = 719,728 : x
  2. Step 2: Convert to fraction form
    336,518/719,728 = 719,728/x
  3. Step 3: Cross multiply
    336,518x = 719,728 × 719,728
  4. Step 4: Simplify right side
    336,518x = 518,008,393,984
  5. Step 5: Solve for x
    x = 518,008,393,984/336,518
  6. Step 6: Final answer
    x = 1,539,318.53

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Why These Related Problems?

These problems maintain the same ratio (2.14) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.