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Finding the Third Proportional to 78,153.75 and 121,091.63

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Solution

The third proportional to 78,153.75 and 121,091.63 is: 187,619.68

Step by Step Solution

  1. Step 1: Write the proportion equation
    78,153.75 : 121,091.63 = 121,091.63 : x
  2. Step 2: Convert to fraction form
    78,153.75/121,091.63 = 121,091.63/x
  3. Step 3: Cross multiply
    78,153.75x = 121,091.63 × 121,091.63
  4. Step 4: Simplify right side
    78,153.75x = 14,663,181,645.14
  5. Step 5: Solve for x
    x = 14,663,181,645.14/78,153.75
  6. Step 6: Final answer
    x = 187,619.68

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