Finding the Third Proportional to 99,477 and 140,622.50

Step by Step Solution

1. Step 1: Write the proportion equation
   99,477 : 140,622.50 = 140,622.50 : x
2. Step 2: Convert to fraction form
   99,477/140,622.50 = 140,622.50/x
3. Step 3: Cross multiply
   99,477x = 140,622.50 × 140,622.50
4. Step 4: Simplify right side
   99,477x = 19,774,687,506.25
5. Step 5: Solve for x
   x = 19,774,687,506.25/99,477
6. Step 6: Final answer
   x = 198,786.53