Finding the Third Proportional to 99,615 and 149,530.50

Step by Step Solution

1. Step 1: Write the proportion equation
   99,615 : 149,530.50 = 149,530.50 : x
2. Step 2: Convert to fraction form
   99,615/149,530.50 = 149,530.50/x
3. Step 3: Cross multiply
   99,615x = 149,530.50 × 149,530.50
4. Step 4: Simplify right side
   99,615x = 22,359,370,430.25
5. Step 5: Solve for x
   x = 22,359,370,430.25/99,615
6. Step 6: Final answer
   x = 224,457.87