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Finding the Third Proportional to 8,686,557 and 18,719,487

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Solution

The third proportional to 8,686,557 and 18,719,487 is: 40,340,401.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,686,557 : 18,719,487 = 18,719,487 : x
  2. Step 2: Convert to fraction form
    8,686,557/18,719,487 = 18,719,487/x
  3. Step 3: Cross multiply
    8,686,557x = 18,719,487 × 18,719,487
  4. Step 4: Simplify right side
    8,686,557x = 350,419,193,543,169
  5. Step 5: Solve for x
    x = 350,419,193,543,169/8,686,557
  6. Step 6: Final answer
    x = 40,340,401.10

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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.