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Finding the Third Proportional to 5,128,782 and 8,121,303

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Solution

The third proportional to 5,128,782 and 8,121,303 is: 12,859,888.06

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,128,782 : 8,121,303 = 8,121,303 : x
  2. Step 2: Convert to fraction form
    5,128,782/8,121,303 = 8,121,303/x
  3. Step 3: Cross multiply
    5,128,782x = 8,121,303 × 8,121,303
  4. Step 4: Simplify right side
    5,128,782x = 65,955,562,417,809
  5. Step 5: Solve for x
    x = 65,955,562,417,809/5,128,782
  6. Step 6: Final answer
    x = 12,859,888.06

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Why These Related Problems?

These problems maintain the same ratio (1.58) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.