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Finding the Third Proportional to 918,312 and 1,999,266

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Solution

The third proportional to 918,312 and 1,999,266 is: 4,352,621.48

Step by Step Solution

  1. Step 1: Write the proportion equation
    918,312 : 1,999,266 = 1,999,266 : x
  2. Step 2: Convert to fraction form
    918,312/1,999,266 = 1,999,266/x
  3. Step 3: Cross multiply
    918,312x = 1,999,266 × 1,999,266
  4. Step 4: Simplify right side
    918,312x = 3,997,064,538,756
  5. Step 5: Solve for x
    x = 3,997,064,538,756/918,312
  6. Step 6: Final answer
    x = 4,352,621.48

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Why These Related Problems?

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