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Finding the Third Proportional to 15,909,978,405 and 22,121,553,261

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Solution

The third proportional to 15,909,978,405 and 22,121,553,261 is: 30,758,251,596.71

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,909,978,405 : 22,121,553,261 = 22,121,553,261 : x
  2. Step 2: Convert to fraction form
    15,909,978,405/22,121,553,261 = 22,121,553,261/x
  3. Step 3: Cross multiply
    15,909,978,405x = 22,121,553,261 × 22,121,553,261
  4. Step 4: Simplify right side
    15,909,978,405x = 489,363,118,679,259,742,208
  5. Step 5: Solve for x
    x = 489,363,118,679,259,742,208/15,909,978,405
  6. Step 6: Final answer
    x = 30,758,251,596.71

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