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Finding the Third Proportional to 426,990 and 919,956

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Solution

The third proportional to 426,990 and 919,956 is: 1,982,058.23

Step by Step Solution

  1. Step 1: Write the proportion equation
    426,990 : 919,956 = 919,956 : x
  2. Step 2: Convert to fraction form
    426,990/919,956 = 919,956/x
  3. Step 3: Cross multiply
    426,990x = 919,956 × 919,956
  4. Step 4: Simplify right side
    426,990x = 846,319,041,936
  5. Step 5: Solve for x
    x = 846,319,041,936/426,990
  6. Step 6: Final answer
    x = 1,982,058.23

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Why These Related Problems?

These problems maintain the same ratio (2.15) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.