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Finding the Third Proportional to 678,294 and 1,079,709.75

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Solution

The third proportional to 678,294 and 1,079,709.75 is: 1,718,684.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    678,294 : 1,079,709.75 = 1,079,709.75 : x
  2. Step 2: Convert to fraction form
    678,294/1,079,709.75 = 1,079,709.75/x
  3. Step 3: Cross multiply
    678,294x = 1,079,709.75 × 1,079,709.75
  4. Step 4: Simplify right side
    678,294x = 1,165,773,144,245.06
  5. Step 5: Solve for x
    x = 1,165,773,144,245.06/678,294
  6. Step 6: Final answer
    x = 1,718,684.15

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