Finding the Third Proportional to 139,071 and 304,386

Step by Step Solution

1. Step 1: Write the proportion equation
   139,071 : 304,386 = 304,386 : x
2. Step 2: Convert to fraction form
   139,071/304,386 = 304,386/x
3. Step 3: Cross multiply
   139,071x = 304,386 × 304,386
4. Step 4: Simplify right side
   139,071x = 92,650,836,996
5. Step 5: Solve for x
   x = 92,650,836,996/139,071
6. Step 6: Final answer
   x = 666,212.49