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Finding the Third Proportional to 718,540 and 999,064

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Solution

The third proportional to 718,540 and 999,064 is: 1,389,106.91

Step by Step Solution

  1. Step 1: Write the proportion equation
    718,540 : 999,064 = 999,064 : x
  2. Step 2: Convert to fraction form
    718,540/999,064 = 999,064/x
  3. Step 3: Cross multiply
    718,540x = 999,064 × 999,064
  4. Step 4: Simplify right side
    718,540x = 998,128,876,096
  5. Step 5: Solve for x
    x = 998,128,876,096/718,540
  6. Step 6: Final answer
    x = 1,389,106.91

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Why These Related Problems?

These problems maintain the same ratio (1.39) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.