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Finding the Third Proportional to 58,689,258 and 128,715,912

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Solution

The third proportional to 58,689,258 and 128,715,912 is: 282,296,736.52

Step by Step Solution

  1. Step 1: Write the proportion equation
    58,689,258 : 128,715,912 = 128,715,912 : x
  2. Step 2: Convert to fraction form
    58,689,258/128,715,912 = 128,715,912/x
  3. Step 3: Cross multiply
    58,689,258x = 128,715,912 × 128,715,912
  4. Step 4: Simplify right side
    58,689,258x = 16,567,786,001,991,744
  5. Step 5: Solve for x
    x = 16,567,786,001,991,744/58,689,258
  6. Step 6: Final answer
    x = 282,296,736.52

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Why These Related Problems?

These problems maintain the same ratio (2.19) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.