Finding the Third Proportional to 102,990 and 146,995.50

Step by Step Solution

1. Step 1: Write the proportion equation
   102,990 : 146,995.50 = 146,995.50 : x
2. Step 2: Convert to fraction form
   102,990/146,995.50 = 146,995.50/x
3. Step 3: Cross multiply
   102,990x = 146,995.50 × 146,995.50
4. Step 4: Simplify right side
   102,990x = 21,607,677,020.25
5. Step 5: Solve for x
   x = 21,607,677,020.25/102,990
6. Step 6: Final answer
   x = 209,803.64