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Finding the Third Proportional to 311,568.50 and 677,812.75

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Solution

The third proportional to 311,568.50 and 677,812.75 is: 1,474,571.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    311,568.50 : 677,812.75 = 677,812.75 : x
  2. Step 2: Convert to fraction form
    311,568.50/677,812.75 = 677,812.75/x
  3. Step 3: Cross multiply
    311,568.50x = 677,812.75 × 677,812.75
  4. Step 4: Simplify right side
    311,568.50x = 459,430,124,062.56
  5. Step 5: Solve for x
    x = 459,430,124,062.56/311,568.50
  6. Step 6: Final answer
    x = 1,474,571.80

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