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Finding the Third Proportional to 518,742 and 778,113

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Solution

The third proportional to 518,742 and 778,113 is: 1,167,169.50

Step by Step Solution

  1. Step 1: Write the proportion equation
    518,742 : 778,113 = 778,113 : x
  2. Step 2: Convert to fraction form
    518,742/778,113 = 778,113/x
  3. Step 3: Cross multiply
    518,742x = 778,113 × 778,113
  4. Step 4: Simplify right side
    518,742x = 605,459,840,769
  5. Step 5: Solve for x
    x = 605,459,840,769/518,742
  6. Step 6: Final answer
    x = 1,167,169.50

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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.