Finding the Third Proportional to 139,473 and 296,388

Step by Step Solution

1. Step 1: Write the proportion equation
   139,473 : 296,388 = 296,388 : x
2. Step 2: Convert to fraction form
   139,473/296,388 = 296,388/x
3. Step 3: Cross multiply
   139,473x = 296,388 × 296,388
4. Step 4: Simplify right side
   139,473x = 87,845,846,544
5. Step 5: Solve for x
   x = 87,845,846,544/139,473
6. Step 6: Final answer
   x = 629,841.23