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Finding the Third Proportional to 128,748,010 and 275,904,726

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Solution

The third proportional to 128,748,010 and 275,904,726 is: 591,258,985.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    128,748,010 : 275,904,726 = 275,904,726 : x
  2. Step 2: Convert to fraction form
    128,748,010/275,904,726 = 275,904,726/x
  3. Step 3: Cross multiply
    128,748,010x = 275,904,726 × 275,904,726
  4. Step 4: Simplify right side
    128,748,010x = 76,123,417,829,135,072
  5. Step 5: Solve for x
    x = 76,123,417,829,135,072/128,748,010
  6. Step 6: Final answer
    x = 591,258,985.90

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Why These Related Problems?

These problems maintain the same ratio (2.14) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.