Finding the Third Proportional to 231,840 and 488,586

Step by Step Solution

1. Step 1: Write the proportion equation
   231,840 : 488,586 = 488,586 : x
2. Step 2: Convert to fraction form
   231,840/488,586 = 488,586/x
3. Step 3: Cross multiply
   231,840x = 488,586 × 488,586
4. Step 4: Simplify right side
   231,840x = 238,716,279,396
5. Step 5: Solve for x
   x = 238,716,279,396/231,840
6. Step 6: Final answer
   x = 1,029,659.59