Finding the Third Proportional to 243,488 and 493,672

Step by Step Solution

1. Step 1: Write the proportion equation
   243,488 : 493,672 = 493,672 : x
2. Step 2: Convert to fraction form
   243,488/493,672 = 493,672/x
3. Step 3: Cross multiply
   243,488x = 493,672 × 493,672
4. Step 4: Simplify right side
   243,488x = 243,712,043,584
5. Step 5: Solve for x
   x = 243,712,043,584/243,488
6. Step 6: Final answer
   x = 1,000,920.14