Finding the Third Proportional to 428,076 and 922,380

Step by Step Solution

1. Step 1: Write the proportion equation
   428,076 : 922,380 = 922,380 : x
2. Step 2: Convert to fraction form
   428,076/922,380 = 922,380/x
3. Step 3: Cross multiply
   428,076x = 922,380 × 922,380
4. Step 4: Simplify right side
   428,076x = 850,784,864,400
5. Step 5: Solve for x
   x = 850,784,864,400/428,076
6. Step 6: Final answer
   x = 1,987,462.19