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Finding the Third Proportional to 66,809,879 and 139,728,352

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Solution

The third proportional to 66,809,879 and 139,728,352 is: 292,232,416.00

Step by Step Solution

  1. Step 1: Write the proportion equation
    66,809,879 : 139,728,352 = 139,728,352 : x
  2. Step 2: Convert to fraction form
    66,809,879/139,728,352 = 139,728,352/x
  3. Step 3: Cross multiply
    66,809,879x = 139,728,352 × 139,728,352
  4. Step 4: Simplify right side
    66,809,879x = 19,524,012,352,635,904
  5. Step 5: Solve for x
    x = 19,524,012,352,635,904/66,809,879
  6. Step 6: Final answer
    x = 292,232,416.00

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Why These Related Problems?

These problems maintain the same ratio (2.09) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.