Finding the Third Proportional to 139,659 and 301,458

Step by Step Solution

1. Step 1: Write the proportion equation
   139,659 : 301,458 = 301,458 : x
2. Step 2: Convert to fraction form
   139,659/301,458 = 301,458/x
3. Step 3: Cross multiply
   139,659x = 301,458 × 301,458
4. Step 4: Simplify right side
   139,659x = 90,876,925,764
5. Step 5: Solve for x
   x = 90,876,925,764/139,659
6. Step 6: Final answer
   x = 650,705.83