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Finding the Third Proportional to 412,136 and 878,708

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Solution

The third proportional to 412,136 and 878,708 is: 1,873,478.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    412,136 : 878,708 = 878,708 : x
  2. Step 2: Convert to fraction form
    412,136/878,708 = 878,708/x
  3. Step 3: Cross multiply
    412,136x = 878,708 × 878,708
  4. Step 4: Simplify right side
    412,136x = 772,127,749,264
  5. Step 5: Solve for x
    x = 772,127,749,264/412,136
  6. Step 6: Final answer
    x = 1,873,478.05

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Why These Related Problems?

These problems maintain the same ratio (2.13) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.