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Finding the Third Proportional to 66,306,786 and 139,484,703

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Solution

The third proportional to 66,306,786 and 139,484,703 is: 293,423,698.31

Step by Step Solution

  1. Step 1: Write the proportion equation
    66,306,786 : 139,484,703 = 139,484,703 : x
  2. Step 2: Convert to fraction form
    66,306,786/139,484,703 = 139,484,703/x
  3. Step 3: Cross multiply
    66,306,786x = 139,484,703 × 139,484,703
  4. Step 4: Simplify right side
    66,306,786x = 19,455,982,370,998,208
  5. Step 5: Solve for x
    x = 19,455,982,370,998,208/66,306,786
  6. Step 6: Final answer
    x = 293,423,698.31

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Why These Related Problems?

These problems maintain the same ratio (2.10) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.