Finding the Third Proportional to 139,776 and 304,128

Step by Step Solution

1. Step 1: Write the proportion equation
   139,776 : 304,128 = 304,128 : x
2. Step 2: Convert to fraction form
   139,776/304,128 = 304,128/x
3. Step 3: Cross multiply
   139,776x = 304,128 × 304,128
4. Step 4: Simplify right side
   139,776x = 92,493,840,384
5. Step 5: Solve for x
   x = 92,493,840,384/139,776
6. Step 6: Final answer
   x = 661,729.05