Finding the Third Proportional to 113,259 and 158,428.50

Step by Step Solution

1. Step 1: Write the proportion equation
   113,259 : 158,428.50 = 158,428.50 : x
2. Step 2: Convert to fraction form
   113,259/158,428.50 = 158,428.50/x
3. Step 3: Cross multiply
   113,259x = 158,428.50 × 158,428.50
4. Step 4: Simplify right side
   113,259x = 25,099,589,612.25
5. Step 5: Solve for x
   x = 25,099,589,612.25/113,259
6. Step 6: Final answer
   x = 221,612.32