Finding the Third Proportional to 198,420 and 468,310

Step by Step Solution

1. Step 1: Write the proportion equation
   198,420 : 468,310 = 468,310 : x
2. Step 2: Convert to fraction form
   198,420/468,310 = 468,310/x
3. Step 3: Cross multiply
   198,420x = 468,310 × 468,310
4. Step 4: Simplify right side
   198,420x = 219,314,256,100
5. Step 5: Solve for x
   x = 219,314,256,100/198,420
6. Step 6: Final answer
   x = 1,105,303.18