Finding the Third Proportional to 139,074 and 304,392

Step by Step Solution

1. Step 1: Write the proportion equation
   139,074 : 304,392 = 304,392 : x
2. Step 2: Convert to fraction form
   139,074/304,392 = 304,392/x
3. Step 3: Cross multiply
   139,074x = 304,392 × 304,392
4. Step 4: Simplify right side
   139,074x = 92,654,489,664
5. Step 5: Solve for x
   x = 92,654,489,664/139,074
6. Step 6: Final answer
   x = 666,224.38