Finding the Third Proportional to 181,396 and 423,589.25

Step by Step Solution

1. Step 1: Write the proportion equation
   181,396 : 423,589.25 = 423,589.25 : x
2. Step 2: Convert to fraction form
   181,396/423,589.25 = 423,589.25/x
3. Step 3: Cross multiply
   181,396x = 423,589.25 × 423,589.25
4. Step 4: Simplify right side
   181,396x = 179,427,852,715.56
5. Step 5: Solve for x
   x = 179,427,852,715.56/181,396
6. Step 6: Final answer
   x = 989,150.00