Finding the Third Proportional to 238,784 and 519,040

Step by Step Solution

1. Step 1: Write the proportion equation
   238,784 : 519,040 = 519,040 : x
2. Step 2: Convert to fraction form
   238,784/519,040 = 519,040/x
3. Step 3: Cross multiply
   238,784x = 519,040 × 519,040
4. Step 4: Simplify right side
   238,784x = 269,402,521,600
5. Step 5: Solve for x
   x = 269,402,521,600/238,784
6. Step 6: Final answer
   x = 1,128,226.86