Finding the Third Proportional to 300,192 and 456,476

Step by Step Solution

1. Step 1: Write the proportion equation
   300,192 : 456,476 = 456,476 : x
2. Step 2: Convert to fraction form
   300,192/456,476 = 456,476/x
3. Step 3: Cross multiply
   300,192x = 456,476 × 456,476
4. Step 4: Simplify right side
   300,192x = 208,370,338,576
5. Step 5: Solve for x
   x = 208,370,338,576/300,192
6. Step 6: Final answer
   x = 694,123.56