Finding the Third Proportional to 218,974.50 and 472,131

Step by Step Solution

1. Step 1: Write the proportion equation
   218,974.50 : 472,131 = 472,131 : x
2. Step 2: Convert to fraction form
   218,974.50/472,131 = 472,131/x
3. Step 3: Cross multiply
   218,974.50x = 472,131 × 472,131
4. Step 4: Simplify right side
   218,974.50x = 222,907,681,161
5. Step 5: Solve for x
   x = 222,907,681,161/218,974.50
6. Step 6: Final answer
   x = 1,017,961.82