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Finding the Third Proportional to 66,751,959 and 138,619,878

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Solution

The third proportional to 66,751,959 and 138,619,878 is: 287,863,770.06

Step by Step Solution

  1. Step 1: Write the proportion equation
    66,751,959 : 138,619,878 = 138,619,878 : x
  2. Step 2: Convert to fraction form
    66,751,959/138,619,878 = 138,619,878/x
  3. Step 3: Cross multiply
    66,751,959x = 138,619,878 × 138,619,878
  4. Step 4: Simplify right side
    66,751,959x = 19,215,470,576,734,884
  5. Step 5: Solve for x
    x = 19,215,470,576,734,884/66,751,959
  6. Step 6: Final answer
    x = 287,863,770.06

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Why These Related Problems?

These problems maintain the same ratio (2.08) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.