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Finding the Third Proportional to 66,026,978 and 155,358,690

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Solution

The third proportional to 66,026,978 and 155,358,690 is: 365,552,434.62

Step by Step Solution

  1. Step 1: Write the proportion equation
    66,026,978 : 155,358,690 = 155,358,690 : x
  2. Step 2: Convert to fraction form
    66,026,978/155,358,690 = 155,358,690/x
  3. Step 3: Cross multiply
    66,026,978x = 155,358,690 × 155,358,690
  4. Step 4: Simplify right side
    66,026,978x = 24,136,322,558,516,100
  5. Step 5: Solve for x
    x = 24,136,322,558,516,100/66,026,978
  6. Step 6: Final answer
    x = 365,552,434.62

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These problems maintain the same ratio (2.35) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.