Finding the Third Proportional to 139,158 and 304,572

Step by Step Solution

1. Step 1: Write the proportion equation
   139,158 : 304,572 = 304,572 : x
2. Step 2: Convert to fraction form
   139,158/304,572 = 304,572/x
3. Step 3: Cross multiply
   139,158x = 304,572 × 304,572
4. Step 4: Simplify right side
   139,158x = 92,764,103,184
5. Step 5: Solve for x
   x = 92,764,103,184/139,158
6. Step 6: Final answer
   x = 666,609.92