Finding the Third Proportional to 238,470 and 519,078

Step by Step Solution

1. Step 1: Write the proportion equation
   238,470 : 519,078 = 519,078 : x
2. Step 2: Convert to fraction form
   238,470/519,078 = 519,078/x
3. Step 3: Cross multiply
   238,470x = 519,078 × 519,078
4. Step 4: Simplify right side
   238,470x = 269,441,970,084
5. Step 5: Solve for x
   x = 269,441,970,084/238,470
6. Step 6: Final answer
   x = 1,129,877.85