Finding the Third Proportional to 106,590 and 153,990.75

Step by Step Solution

1. Step 1: Write the proportion equation
   106,590 : 153,990.75 = 153,990.75 : x
2. Step 2: Convert to fraction form
   106,590/153,990.75 = 153,990.75/x
3. Step 3: Cross multiply
   106,590x = 153,990.75 × 153,990.75
4. Step 4: Simplify right side
   106,590x = 23,713,151,085.56
5. Step 5: Solve for x
   x = 23,713,151,085.56/106,590
6. Step 6: Final answer
   x = 222,470.69