Finding the Third Proportional to 139,798 and 304,172

Step by Step Solution

1. Step 1: Write the proportion equation
   139,798 : 304,172 = 304,172 : x
2. Step 2: Convert to fraction form
   139,798/304,172 = 304,172/x
3. Step 3: Cross multiply
   139,798x = 304,172 × 304,172
4. Step 4: Simplify right side
   139,798x = 92,520,605,584
5. Step 5: Solve for x
   x = 92,520,605,584/139,798
6. Step 6: Final answer
   x = 661,816.37