Finding the Third Proportional to 99,623.50 and 214,990

Step by Step Solution

1. Step 1: Write the proportion equation
   99,623.50 : 214,990 = 214,990 : x
2. Step 2: Convert to fraction form
   99,623.50/214,990 = 214,990/x
3. Step 3: Cross multiply
   99,623.50x = 214,990 × 214,990
4. Step 4: Simplify right side
   99,623.50x = 46,220,700,100
5. Step 5: Solve for x
   x = 46,220,700,100/99,623.50
6. Step 6: Final answer
   x = 463,953.79