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Finding the Third Proportional to 7,989,918 and 12,357,765

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Solution

The third proportional to 7,989,918 and 12,357,765 is: 19,113,382.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,989,918 : 12,357,765 = 12,357,765 : x
  2. Step 2: Convert to fraction form
    7,989,918/12,357,765 = 12,357,765/x
  3. Step 3: Cross multiply
    7,989,918x = 12,357,765 × 12,357,765
  4. Step 4: Simplify right side
    7,989,918x = 152,714,355,795,225
  5. Step 5: Solve for x
    x = 152,714,355,795,225/7,989,918
  6. Step 6: Final answer
    x = 19,113,382.11

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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.