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Finding the Third Proportional to 249,540.75 and 390,948.75

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Solution

The third proportional to 249,540.75 and 390,948.75 is: 612,488.84

Step by Step Solution

  1. Step 1: Write the proportion equation
    249,540.75 : 390,948.75 = 390,948.75 : x
  2. Step 2: Convert to fraction form
    249,540.75/390,948.75 = 390,948.75/x
  3. Step 3: Cross multiply
    249,540.75x = 390,948.75 × 390,948.75
  4. Step 4: Simplify right side
    249,540.75x = 152,840,925,126.56
  5. Step 5: Solve for x
    x = 152,840,925,126.56/249,540.75
  6. Step 6: Final answer
    x = 612,488.84

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