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Finding the Third Proportional to 518,765 and 778,148

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Solution

The third proportional to 518,765 and 778,148 is: 1,167,222.75

Step by Step Solution

  1. Step 1: Write the proportion equation
    518,765 : 778,148 = 778,148 : x
  2. Step 2: Convert to fraction form
    518,765/778,148 = 778,148/x
  3. Step 3: Cross multiply
    518,765x = 778,148 × 778,148
  4. Step 4: Simplify right side
    518,765x = 605,514,309,904
  5. Step 5: Solve for x
    x = 605,514,309,904/518,765
  6. Step 6: Final answer
    x = 1,167,222.75

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.