Finding the Third Proportional to 99,813 and 149,719.50

Step by Step Solution

1. Step 1: Write the proportion equation
   99,813 : 149,719.50 = 149,719.50 : x
2. Step 2: Convert to fraction form
   99,813/149,719.50 = 149,719.50/x
3. Step 3: Cross multiply
   99,813x = 149,719.50 × 149,719.50
4. Step 4: Simplify right side
   99,813x = 22,415,928,680.25
5. Step 5: Solve for x
   x = 22,415,928,680.25/99,813
6. Step 6: Final answer
   x = 224,579.25