Finding the Third Proportional to 139,592 and 290,983

Step by Step Solution

1. Step 1: Write the proportion equation
   139,592 : 290,983 = 290,983 : x
2. Step 2: Convert to fraction form
   139,592/290,983 = 290,983/x
3. Step 3: Cross multiply
   139,592x = 290,983 × 290,983
4. Step 4: Simplify right side
   139,592x = 84,671,106,289
5. Step 5: Solve for x
   x = 84,671,106,289/139,592
6. Step 6: Final answer
   x = 606,561.31