Finding the Third Proportional to 139,899 and 301,905

Step by Step Solution

1. Step 1: Write the proportion equation
   139,899 : 301,905 = 301,905 : x
2. Step 2: Convert to fraction form
   139,899/301,905 = 301,905/x
3. Step 3: Cross multiply
   139,899x = 301,905 × 301,905
4. Step 4: Simplify right side
   139,899x = 91,146,629,025
5. Step 5: Solve for x
   x = 91,146,629,025/139,899
6. Step 6: Final answer
   x = 651,517.37