Finding the Third Proportional to 106,588.50 and 153,990

Step by Step Solution

1. Step 1: Write the proportion equation
   106,588.50 : 153,990 = 153,990 : x
2. Step 2: Convert to fraction form
   106,588.50/153,990 = 153,990/x
3. Step 3: Cross multiply
   106,588.50x = 153,990 × 153,990
4. Step 4: Simplify right side
   106,588.50x = 23,712,920,100
5. Step 5: Solve for x
   x = 23,712,920,100/106,588.50
6. Step 6: Final answer
   x = 222,471.66