Finding the Third Proportional to 89,344 and 243,040

Step by Step Solution

1. Step 1: Write the proportion equation
   89,344 : 243,040 = 243,040 : x
2. Step 2: Convert to fraction form
   89,344/243,040 = 243,040/x
3. Step 3: Cross multiply
   89,344x = 243,040 × 243,040
4. Step 4: Simplify right side
   89,344x = 59,068,441,600
5. Step 5: Solve for x
   x = 59,068,441,600/89,344
6. Step 6: Final answer
   x = 661,134.96