Finding the Third Proportional to 111,120 and 176,521.50

Step by Step Solution

1. Step 1: Write the proportion equation
   111,120 : 176,521.50 = 176,521.50 : x
2. Step 2: Convert to fraction form
   111,120/176,521.50 = 176,521.50/x
3. Step 3: Cross multiply
   111,120x = 176,521.50 × 176,521.50
4. Step 4: Simplify right side
   111,120x = 31,159,839,962.25
5. Step 5: Solve for x
   x = 31,159,839,962.25/111,120
6. Step 6: Final answer
   x = 280,416.13