Finding the Third Proportional to 43,209 and 89,412

Step by Step Solution

1. Step 1: Write the proportion equation
   43,209 : 89,412 = 89,412 : x
2. Step 2: Convert to fraction form
   43,209/89,412 = 89,412/x
3. Step 3: Cross multiply
   43,209x = 89,412 × 89,412
4. Step 4: Simplify right side
   43,209x = 7,994,505,744
5. Step 5: Solve for x
   x = 7,994,505,744/43,209
6. Step 6: Final answer
   x = 185,019.46