Finding the Third Proportional to 99,543 and 154,147.50

Step by Step Solution

1. Step 1: Write the proportion equation
   99,543 : 154,147.50 = 154,147.50 : x
2. Step 2: Convert to fraction form
   99,543/154,147.50 = 154,147.50/x
3. Step 3: Cross multiply
   99,543x = 154,147.50 × 154,147.50
4. Step 4: Simplify right side
   99,543x = 23,761,451,756.25
5. Step 5: Solve for x
   x = 23,761,451,756.25/99,543
6. Step 6: Final answer
   x = 238,705.40