Finding the Third Proportional to 139,488 and 304,248

Step by Step Solution

1. Step 1: Write the proportion equation
   139,488 : 304,248 = 304,248 : x
2. Step 2: Convert to fraction form
   139,488/304,248 = 304,248/x
3. Step 3: Cross multiply
   139,488x = 304,248 × 304,248
4. Step 4: Simplify right side
   139,488x = 92,566,845,504
5. Step 5: Solve for x
   x = 92,566,845,504/139,488
6. Step 6: Final answer
   x = 663,618.70