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Finding the Third Proportional to 72,555,978 and 157,866,318

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Solution

The third proportional to 72,555,978 and 157,866,318 is: 343,483,404.76

Step by Step Solution

  1. Step 1: Write the proportion equation
    72,555,978 : 157,866,318 = 157,866,318 : x
  2. Step 2: Convert to fraction form
    72,555,978/157,866,318 = 157,866,318/x
  3. Step 3: Cross multiply
    72,555,978x = 157,866,318 × 157,866,318
  4. Step 4: Simplify right side
    72,555,978x = 24,921,774,358,877,124
  5. Step 5: Solve for x
    x = 24,921,774,358,877,124/72,555,978
  6. Step 6: Final answer
    x = 343,483,404.76

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These problems maintain the same ratio (2.18) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.