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Finding the Third Proportional to 18,872,767,428 and 29,303,569,309

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Solution

The third proportional to 18,872,767,428 and 29,303,569,309 is: 45,499,377,742.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,872,767,428 : 29,303,569,309 = 29,303,569,309 : x
  2. Step 2: Convert to fraction form
    18,872,767,428/29,303,569,309 = 29,303,569,309/x
  3. Step 3: Cross multiply
    18,872,767,428x = 29,303,569,309 × 29,303,569,309
  4. Step 4: Simplify right side
    18,872,767,428x = 858,699,174,247,366,787,072
  5. Step 5: Solve for x
    x = 858,699,174,247,366,787,072/18,872,767,428
  6. Step 6: Final answer
    x = 45,499,377,742.21

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Why These Related Problems?

These problems maintain the same ratio (1.55) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.