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Finding the Third Proportional to 78,817.50 and 172,964.25

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Solution

The third proportional to 78,817.50 and 172,964.25 is: 379,568.39

Step by Step Solution

  1. Step 1: Write the proportion equation
    78,817.50 : 172,964.25 = 172,964.25 : x
  2. Step 2: Convert to fraction form
    78,817.50/172,964.25 = 172,964.25/x
  3. Step 3: Cross multiply
    78,817.50x = 172,964.25 × 172,964.25
  4. Step 4: Simplify right side
    78,817.50x = 29,916,631,778.06
  5. Step 5: Solve for x
    x = 29,916,631,778.06/78,817.50
  6. Step 6: Final answer
    x = 379,568.39

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