Finding the Third Proportional to 139,551 and 290,910

Step by Step Solution

1. Step 1: Write the proportion equation
   139,551 : 290,910 = 290,910 : x
2. Step 2: Convert to fraction form
   139,551/290,910 = 290,910/x
3. Step 3: Cross multiply
   139,551x = 290,910 × 290,910
4. Step 4: Simplify right side
   139,551x = 84,628,628,100
5. Step 5: Solve for x
   x = 84,628,628,100/139,551
6. Step 6: Final answer
   x = 606,435.12