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Finding the Third Proportional to 55,392,912 and 128,235,420

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Solution

The third proportional to 55,392,912 and 128,235,420 is: 296,866,915.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    55,392,912 : 128,235,420 = 128,235,420 : x
  2. Step 2: Convert to fraction form
    55,392,912/128,235,420 = 128,235,420/x
  3. Step 3: Cross multiply
    55,392,912x = 128,235,420 × 128,235,420
  4. Step 4: Simplify right side
    55,392,912x = 16,444,322,942,576,400
  5. Step 5: Solve for x
    x = 16,444,322,942,576,400/55,392,912
  6. Step 6: Final answer
    x = 296,866,915.80

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These problems maintain the same ratio (2.32) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.