Finding the Third Proportional to 99,072 and 148,216.50

Step by Step Solution

1. Step 1: Write the proportion equation
   99,072 : 148,216.50 = 148,216.50 : x
2. Step 2: Convert to fraction form
   99,072/148,216.50 = 148,216.50/x
3. Step 3: Cross multiply
   99,072x = 148,216.50 × 148,216.50
4. Step 4: Simplify right side
   99,072x = 21,968,130,872.25
5. Step 5: Solve for x
   x = 21,968,130,872.25/99,072
6. Step 6: Final answer
   x = 221,739.05