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Finding the Third Proportional to 425,742.19 and 640,401.75

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Solution

The third proportional to 425,742.19 and 640,401.75 is: 963,292.84

Step by Step Solution

  1. Step 1: Write the proportion equation
    425,742.19 : 640,401.75 = 640,401.75 : x
  2. Step 2: Convert to fraction form
    425,742.19/640,401.75 = 640,401.75/x
  3. Step 3: Cross multiply
    425,742.19x = 640,401.75 × 640,401.75
  4. Step 4: Simplify right side
    425,742.19x = 410,114,401,403.06
  5. Step 5: Solve for x
    x = 410,114,401,403.06/425,742.19
  6. Step 6: Final answer
    x = 963,292.84

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