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Finding the Third Proportional to 12,489,805 and 18,734,706

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Solution

The third proportional to 12,489,805 and 18,734,706 is: 28,102,056.75

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,489,805 : 18,734,706 = 18,734,706 : x
  2. Step 2: Convert to fraction form
    12,489,805/18,734,706 = 18,734,706/x
  3. Step 3: Cross multiply
    12,489,805x = 18,734,706 × 18,734,706
  4. Step 4: Simplify right side
    12,489,805x = 350,989,208,906,436
  5. Step 5: Solve for x
    x = 350,989,208,906,436/12,489,805
  6. Step 6: Final answer
    x = 28,102,056.75

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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.